Garmin Watch Band Size by Model
Garmin makes this simpler than it looks and harder than it should be. Simpler: nearly every Garmin watch takes one of five band widths, and the width is fixed by the model, not by taste. Harder: Garmin splits its watches between the QuickFit lever system on the Fenix, Epix, Enduro, Descent, quatix, tactix, MARQ, and D2 Mach lines and standard quick-release spring bars on most of the rest, and the two systems are not interchangeable even at the same 20mm, 22mm, or 26mm width. The model table below lists every model group with its width in millimeters and, where Garmin publishes the number, the wrist range the stock band fits.
The one-line answer: Fenix S cases (5S through 7S, plus the 43mm Fenix 8) take 20mm bands, standard Fenix cases take 22mm, and X cases plus the Fenix 3 and the 51mm Fenix 8 take 26mm. Outside the Fenix line: Forerunner 245, vivoactive 5, vivoactive 6, and Venu take 20mm, Forerunner 265S and Venu 3S take 18mm, Lily 2 takes 14mm, and Forerunner 955, Venu 3, Instinct, and Instinct Solar take 22mm, with the Forerunner 965 on QuickFit 22. The Epix line splits three ways: Epix Pro 42mm takes 20mm, the 47mm Epix and Epix Pro take 22mm, and the Epix Pro 51mm takes 26mm. The specialist lines follow the same case-size logic: the Approach S70 42mm takes 20mm where the 47mm takes 22mm, the quatix 8 and tactix 8 split 47mm at 22mm against 51mm at 26mm, every MARQ takes 22mm, and the aviation D2 watches split 47mm at 22mm against 51mm at 26mm, while the entry golf models (S12, S40, S42, S44, S50) and the D2 Air take 20mm quick-release bands. The Lily line exists for small wrists generally; see smartwatches for small wrists.
Band width by Garmin model
| Model | Band width | Fits wrists | Notes |
|---|---|---|---|
| Fenix 8 51mm (AMOLED and Solar) | 26mm | to 225mm | UltraFit band; no S or X suffix, sizes named 43/47/51mm |
| Fenix 8 47mm | 22mm | QuickFit 22 | |
| Fenix 8 43mm | 20mm | QuickFit 20 | |
| Fenix 7X / 7X Pro | 26mm | 127-210mm | QuickFit 26 |
| Fenix 7 / 7 Pro | 22mm | 125-208mm | QuickFit 22 |
| Fenix 7S / 7S Pro | 20mm | 108-182mm | QuickFit 20 |
| Fenix 6X | 26mm | QuickFit 26 | |
| Fenix 6 / 6 Pro | 22mm | QuickFit 22 | |
| Fenix 6S | 20mm | QuickFit 20 | |
| Fenix 5X Plus | 26mm | 163-250mm | Leather 163-231, metal 166-242 |
| Fenix 5X | 26mm | 135-235mm | QuickFit 26 |
| Fenix 5S Plus | 20mm | 145-217mm | Leather 153-208, metal 153-213 |
| Fenix 5S | 20mm | 125-220mm | Large bands reach 235mm |
| Fenix 5 Plus | 22mm | 163-249mm | Leather 166-229, metal 166-242 |
| Fenix 5 | 22mm | 135-235mm | QuickFit 22 |
| Fenix 3 / 3 HR | 26mm | 148-238mm | QuickFit 26 |
| Epix (Gen 2) 47mm | 22mm | 125-208mm | QuickFit 22; silicone range shown, leather and fabric 132-210, metal 132-215 |
| Epix Pro (Gen 2) 42mm | 20mm | 108-182mm | QuickFit 20; suede 108-175, fabric 108-189, metal 108-180 |
| Epix Pro (Gen 2) 47mm | 22mm | 125-208mm | QuickFit 22; same per-material ranges as the 47mm Epix (Gen 2) |
| Epix Pro (Gen 2) 51mm | 26mm | 127-210mm | QuickFit 26; leather and fabric 135-213, metal 135-225 |
| Enduro 2 | 26mm | 110-220mm | QuickFit 26; stock UltraFit sport loop 110-220, silicone band 127-210 |
| Enduro 3 | 26mm | 127-225mm | QuickFit 26; stock UltraFit 2 nylon 127-225, silicone band 127-210 |
| Descent Mk2 / Mk2i | 26mm | QuickFit 26; Garmin spec pages print no wrist range for the Mk2 series | |
| Descent Mk2S | 20mm | QuickFit 20; smaller case than the Mk2, same S logic as the Fenix S models | |
| Descent Mk3 / Mk3i 43mm | 20mm | 128-224mm | QuickFit 20; extra-long dive band 128-360 for exposure suits |
| Descent Mk3 / Mk3i 51mm | 26mm | 135-230mm | QuickFit 26; extra-long dive band 135-355 |
| Descent G1 / G1 Solar | 22mm | 128-224mm | QuickFit 22; extra-long silicone dive band 128-373 |
| Descent G2 | 22mm | 128-224mm | QuickFit 22; same 128-373 extra-long band as the G1 |
| Forerunner 965 | 22mm | 135-205mm | QuickFit 22; spec sheet says QuickFit compatible, manual documents the stock pin-mounted Forerunner band swap (the reverse of the 955) |
| Forerunner 955 | 22mm | 130-220mm | Quick release 22; QuickFit 22 bands also fit |
| Forerunner 265S | 18mm | 115-178mm | Quick release; the 46mm Forerunner 265 takes 22mm instead |
| Forerunner 245 / 245 Music | 20mm | 127-204mm | Quick release |
| Venu 3 | 22mm | 135-200mm | Quick release 22, industry standard; 45mm case |
| Venu 3S | 18mm | 110-175mm | Quick release 18, industry standard; 41mm case |
| Venu Sq / Sq 2 / Sq 2 Music | 20mm | 125-190mm | Quick release 20, industry standard; square 40.6 x 37mm case, all three variants share it |
| vivoactive 4 (45mm) | 22mm | 135-200mm | Quick release 22; Garmin's manual assigns 22mm to the large case and 18mm to the small, overriding retailer pages that print 20mm |
| vivoactive 4S (40mm) | 18mm | Quick release 18; Garmin prints no separate wrist range for the 4S | |
| Venu (original) | 20mm | 125-190mm | Quick release; one retailer copy misprints 22mm, Garmin sources say 20mm |
| vivoactive 6 | 20mm | 125-190mm | Quick release |
| vivoactive 5 | 20mm | 125-190mm | Quick release; same 125-190mm footprint as the vivoactive 6 |
| Lily 2 / Lily 2 Classic | 14mm | 110-175mm | Quick release |
| Instinct Solar (45mm) | 22mm | 132-224mm | QuickFit 22 |
| Instinct (gen 1, 45mm) | 22mm | 132-224mm | QuickFit 22; Instinct 2S is 20mm and 2X is 26mm |
| Approach S70 47mm | 22mm | 130-205mm | QuickFit 22; 47mm case |
| Approach S70 42mm | 20mm | 115-185mm | QuickFit 20; the two S70 sizes take different widths |
| Approach S62 | 22mm | 125-208mm | QuickFit 22 |
| Approach S60 | 22mm | QuickFit 22; Garmin spec pages print no wrist range for the S60 | |
| Approach S50 | 20mm | 127-190 / 145-217mm | Quick release 20mm, industry standard; S/M and M/L ComfortFit nylon versions |
| Approach S44 | 20mm | 127-190 / 145-217mm | Quick release 20mm, industry standard; same S/M and M/L sizing as the S50 |
| Approach S42 | 20mm | 106-176 / 125-202mm | Quick release; Small/Medium case versions fit smaller wrists |
| Approach S40 | 20mm | 106-176 / 125-202mm | Quick release; same two-size logic as the S42 |
| Approach S12 | 20mm | 125-202mm | Quick release |
| quatix 8 51mm | 26mm | 127-225mm | QuickFit 26; silicone 127-210, UltraFit 127-225, leather 135-213, metal 132-225 |
| quatix 8 47mm | 22mm | 125-215mm | QuickFit 22; silicone 125-208, UltraFit 125-215, leather 132-210, metal 132-215 |
| quatix 7 Pro | 22mm | 125-208mm | QuickFit 22; 47mm case, silicone range shown, leather and fabric 132-210, metal 132-215 |
| quatix 7 (all 47mm editions) | 22mm | 125-208mm | QuickFit 22; Standard, Sapphire, and AMOLED editions share the 47mm case, leather and fabric 132-210, metal 132-215 |
| quatix 7X (51mm) | 26mm | 127-210mm | QuickFit 26; leather and fabric 135-213, metal 135-225 |
| tactix 8 51mm | 26mm | 127-225mm | QuickFit 26; silicone 127-210, UltraFit 127-225, leather 135-213, metal 135-225 |
| tactix 8 47mm | 22mm | 125-215mm | QuickFit 22; silicone 125-208, UltraFit 125-215, leather 132-210, metal 132-215 |
| tactix 7 (51mm, all editions) | 26mm | 127-210mm | QuickFit 26; leather 135-213, fabric 135-213, metal 135-225; AMOLED and Solar editions share one case |
| MARQ Gen 2 (all models) | 22mm | 135-213mm | QuickFit 22; 46mm cases, Athlete, Adventurer, Aviator, Captain, Golfer, and Damascus editions alike |
| MARQ (Gen 1, all models) | 22mm | 135-213mm | QuickFit 22; nylon straps 135-205 on Golfer, Adventurer, and Captain, silicone 135-213 |
| D2 Mach 2 47mm | 22mm | 125-208mm | QuickFit 22; leather 132-210 |
| D2 Mach 2 51mm | 26mm | 127-210mm | QuickFit 26; metal band 135-225, vented titanium bracelet stock |
| D2 Mach 1 / Mach 1 Pro 47mm | 22mm | 125-208mm | QuickFit 22; leather 132-210, titanium 132-215 |
| D2 Mach 1 Pro 51mm | 26mm | 127-210mm | QuickFit 26; titanium band 135-225 |
| D2 Air / Air X10 | 20mm | Quick release, industry standard; Garmin spec pages print no wrist range for the D2 Air |
Two naming traps worth knowing before you shop. The Fenix 8 dropped the S and X suffixes entirely: the case size in the name (43mm, 47mm, 51mm) is what picks the band width. And the Instinct line is not one width: the gen 1 watch and the Instinct Solar take 22mm, but the Instinct 2S takes 20mm and the Instinct 2X takes 26mm. The Epix and Descent lines repeat the same pattern. Epix Pro splits by case (42mm at 20mm, 47mm at 22mm, 51mm at 26mm) even though the original 47mm Epix (Gen 2) only ever came in one size, and one retailer collection page wrongly lists the 42mm Epix Pro at 22mm: Garmin's own spec pages for the 42mm say 20mm. On the Descent side the Mk2 is 26mm while the Mk2S is 20mm, the Mk3 splits 43mm/20mm against 51mm/26mm, and the G1 and G2 dive watches sit at 22mm. The specialist lines mostly inherit the same 47mm/22mm and 51mm/26mm pairs from the Fenix hardware they share: the quatix 8, tactix 8, and D2 Mach 2 all split that way, and one exception is the Approach S70, where the 42mm case takes 20mm and the 47mm takes 22mm. The quatix 7 family never came in an X-width 47mm: every quatix 7 edition is a 47mm case at 22mm, and only the quatix 7X steps up to 26mm. If your watch is not in the table, the part number on the back of the case (format 010-xxxxx-xx) identifies it, and the Garmin Connect app lists the exact model under About.
The QuickFit vs quick-release trap
The most expensive wrong assumption on Garmin bands is that width is the whole story. It is not. Fenix, Epix, Enduro, Descent, the Approach S60, S62, and S70, every quatix, tactix, MARQ, and D2 Mach, and both Instinct rows above use QuickFit bands, which clip over a fixed watch pin with a lever. Forerunner 245, Forerunner 265S, Forerunner 955, vivoactive 4 and 4S, vivoactive 5, vivoactive 6, Venu, Venu Sq, Venu 3, Venu 3S, Lily 2, the Approach S12, S40, S42, S44, and S50, and the D2 Air use standard quick-release bands on spring bars, though the 955 will also accept a QuickFit 22 band mounted over its watch pin. The Forerunner 965 sits in between: Garmin's spec sheet lists it as QuickFit 22 compatible rather than industry quick-release, and its owner's manual documents swapping the stock Forerunner band, held by a watch pin, for QuickFit 22 bands. A QuickFit 22 band and a quick-release 22 band share a width and nothing else: the mounting hardware differs, and Garmin's own documentation treats the two systems as separate product lines. Buyers who match only the millimeter number get a band that cannot attach.
The second trap is the S suffix. An S model is a smaller case with a narrower lug, not a color variant: the Forerunner 265S takes 18mm where the Forerunner 265 takes 22mm, the Venu 3S takes 18mm where the Venu 3 takes 22mm, and every Fenix S takes 20mm where the standard case takes 22mm. The Descent Mk2S works the same way, dropping from the 26mm of the Mk2 to 20mm. Listings that sell one band for the 265 and 265S together, or for the Venu 3 and 3S together, are wrong on one of the two.
Bigger wrists: the large-band numbers Garmin publishes
Garmin publishes construction and large-band details for the QuickFit system, and they matter if the stock band comes up short. The QuickFit 22 and QuickFit 26 silicone bands are built from a 124mm adjustment section plus a 95mm buckle section. For the 20mm QuickFit width, Garmin sells a Large silicone band (010-12942-00) that fits wrists up to 235mm, matching the fenix 5S Large band range of 125 to 235mm from Garmin's wrist size FAQ. On the fenix 5X Plus, the silicone band reaches 250mm, the longest official fit in the Fenix line. The 51mm Fenix 8 fits up to 225mm with its UltraFit band. For quick-release models, Garmin does not publish a large-band equivalent, so third-party bands are the fallback there.
Buying tips that follow from the table
- Match the attachment system, not just the width. A 22mm quick-release band will not mount on a Fenix 7 or an Instinct, and a QuickFit 22 band will not mount on a Venu. Both the width and the system have to match the row in the table.
- Treat S and X as width changes. Fenix 7S and Fenix 7 differ by 2mm of band width, and the Instinct 2S and 2X differ from the gen 1 watch in both directions. Check the exact model before ordering.
- Measure before buying a large band. Garmin's large options top out at 235mm (20mm QuickFit Large), 250mm (fenix 5X Plus silicone), and 225mm (Fenix 8 51mm UltraFit). Knowing your wrist circumference tells you which of these are options at all, and how tight the band should sit once it fits is a separate question with its own answer in how a watch should fit. For how another smartwatch line sizes its bands by wrist range, the Fitbit band size chart covers every Fitbit family. The other brand whose connector quirks bite unsuspecting buyers is Amazfit: the Amazfit band size chart maps its 20/22mm split and the T-Rex screw-mount exceptions. For COROS watches, the COROS band size chart covers the 20/22/24/26mm width jumps and the Pace 1 screw-pin trap. And if you wear a WHOOP rather than a watch, none of this width logic applies at all: the WHOOP band size chart explains the one-size wrist bands, bicep S/M and L/XL steps, and the 4.0 versus 5.0/MG split.
- Verify the model number if the table leaves doubt. The part number on the case back resolves any Fenix generation or Instinct variant question in seconds, and it is more reliable than the seller's listing title.
Sources
- Fenix 7S 20mm (108-182mm wrists), Fenix 7 22mm (125-208mm), Fenix 7X 26mm (127-210mm): Garmin Malaysia fenix 7 series specification pages (fenix 7S Solar, fenix 7, fenix 7X Pro), corroborated by the garmin.com fenix 7 product pages.
- Fenix 6S 20mm, Fenix 6 22mm, Fenix 6X 26mm: Garmin Malaysia fenix 6 series specification pages (fenix 6S, fenix 6 Pro, fenix 6X).
- Fenix 3 26mm (148-238mm), Fenix 5 22mm and Fenix 5X 26mm (135-235mm), Fenix 5S 20mm (125-220mm, Large bands 125-235mm): Garmin Support wrist size FAQ, captured during research and corroborated by the fenix 3, 5, 5S, and 5X product specifications. Fenix 5S Plus (145-217mm), 5 Plus (163-249mm), and 5X Plus (163-250mm) silicone ranges, with leather and metal ranges per row: official fenix 5 Plus Series specification text, reproduced by multiple Garmin retailers.
- Fenix 8 43mm QuickFit 20, 47mm QuickFit 22, 51mm QuickFit 26 with UltraFit to 225mm: garmin.com fenix 8 product pages for all three case sizes.
- Forerunner 965 QuickFit 22 (135-205mm): Forerunner 965 owner's manual, Changing the Bands ("You can replace the bands with new Forerunner bands or compatible QuickFit 22 bands"), corroborated by Garmin Malaysia and Garmin Singapore specification pages ("QuickFit watch band compatible: yes (22 mm compatible)", "Fits wrists with a circumference of 135-205 mm").
- Forerunner 245 20mm quick-release (127-204mm), Forerunner 265S 18mm quick-release (115-178mm), Forerunner 955 quick-release 22 (130-220mm): garmin.com comparison pages for each model, corroborated by the Forerunner 245, Forerunner 265 Series, and Forerunner 955 owner's manuals.
- Instinct gen 1 and Instinct Solar QuickFit 22, both fitting 132-224mm wrists: Instinct and Instinct Solar owner's manuals, corroborated by Garmin specification pages.
- Epix (Gen 2) 47mm QuickFit 22 (silicone 125-208mm, leather 132-210, fabric 132-210, metal 132-215): Garmin Malaysia and Garmin Singapore epix (Gen 2) specification pages, corroborated by the garmin.com epix product pages.
- Epix Pro (Gen 2) 42mm QuickFit 20 (silicone 108-182mm, suede 108-175, fabric 108-189, metal 108-180): Garmin Malaysia epix Pro 42mm specification page, corroborated by multiple Garmin retailers carrying the official spec text. Adjudication note: one retailer collection page lists the 42mm Epix Pro at 22mm; Garmin's own 42mm spec page prints 20mm, and Garmin's spec is followed.
- Epix Pro (Gen 2) 47mm QuickFit 22 (silicone 125-208mm, leather 132-210, fabric 132-210, metal 132-215) and 51mm QuickFit 26 (silicone 127-210mm, leather 135-213, fabric 135-213, metal 135-225): Garmin Malaysia and Garmin Singapore epix Pro specification pages for both case sizes.
- Enduro 2 QuickFit 26 (UltraFit sport loop 110-220mm, silicone band 127-210mm): Garmin Malaysia and Garmin Singapore Enduro 2 specification pages.
- Enduro 3 QuickFit 26 (UltraFit 2 nylon 127-225mm, silicone band 127-210mm): garmin.com Enduro 3 product specifications, corroborated by the Enduro 3 owner's manual band-change procedure (QuickFit) and multiple Garmin retailers carrying the official spec text.
- Descent Mk2 / Mk2i QuickFit 26 and Descent Mk2S QuickFit 20: Garmin Singapore Descent Mk2 and Garmin Malaysia Descent Mk2S specification pages. Garmin prints no wrist circumference range for the Mk2 series, so those cells stay empty.
- Descent Mk3 / Mk3i 43mm QuickFit 20 (silicone 128-224mm, extra-long dive band 128-360mm): Garmin Malaysia and Garmin Philippines Descent Mk3 43mm specification pages, corroborated by the Garmin Singapore Mk3i 43mm page. Descent Mk3 / Mk3i 51mm QuickFit 26 (silicone 135-230mm, extra-long 135-355mm): Garmin Malaysia Mk3i 51mm specification page.
- Descent G1 / G1 Solar and Descent G2 QuickFit 22 (silicone 128-224mm, extra-long dive band 128-373mm): Garmin Malaysia and Garmin Singapore Descent G1 and G2 specification pages.
- Venu 3 22mm quick-release (135-200mm) and Venu 3S 18mm quick-release (110-175mm): Venu 3 series owner's manual, Changing the Bands ("The watch is compatible with standard quick-release bands. Venu 3S has 18 mm wide bands, and Venu 3 has 22 mm wide bands"), corroborated by Garmin specification pages (garmin.com compare 873008 and 873214: "Quick Release bands: yes (22 mm, Industry standard)", "Fits wrists with a circumference of 135-200 mm" for the Venu 3 and 110-175 mm for the Venu 3S).
- Venu Sq / Sq 2 20mm quick-release (125-190mm): Venu Sq and Venu Sq 2 owner's manuals, Changing the Bands ("The device is compatible with 20 mm wide, standard, quick-release bands"), corroborated by retailer spec pages carrying Garmin's official text (physical size 40.6 x 37 x 11.5mm, wrist circumference 125-190mm).
- vivoactive 4 22mm (135-200mm) and vivoactive 4S 18mm: vivoactive 4/4S owner's manual, Changing the Bands ("The small watch has 18 mm wide bands, and the large watch has 22 mm wide bands"), corroborated by retailer spec pages carrying Garmin's official text (45.1 x 45.1 x 12.8mm, wrist circumference 135-200mm). Adjudication note: one strap retailer's compatibility guide lists the vivoactive 4S at 20mm; a second retailer guide and Garmin's manual say 18mm, and the manual is followed.
- vivoactive 5 20mm quick-release (125-190mm): vivoactive 5 owner's manual, Changing the Bands ("The watch is compatible with 20 mm wide, standard, quick-release bands"), corroborated by Garmin Singapore and retailer specification pages carrying the official spec text ("Quick release bands: yes (20 mm, Industry standard)", "Fits wrists with a circumference of 125-190 mm").
- vivoactive 6 20mm quick-release (125-190mm), Venu 20mm quick-release (125-190mm), Lily 2 14mm quick-release (110-175mm): the vivoactive 6, Venu, and Lily 2 owner's manuals, corroborated by regional Garmin specification pages.
- QuickFit 22 and 26 silicone construction (124mm adjustment plus 95mm buckle) and the non-interchangeability of QuickFit and quick-release systems: Garmin owner's manuals and band product documentation.
- Approach S70 47mm QuickFit 22 (130-205mm) and 42mm QuickFit 20 (115-185mm): garmin.com Approach S70 42mm product page spec tables for both case sizes, corroborated by Garmin Malaysia and Garmin Singapore S70 47mm specification pages.
- Approach S62 QuickFit 22 (125-208mm): Garmin Malaysia and Garmin Singapore specification pages.
- Approach S60 QuickFit 22, no wrist range printed: Garmin Malaysia S60 specification page, corroborated by retailer pages carrying the official spec text ("QuickFit watch band compatible: included (22 mm)").
- Approach S50 and S44 quick-release 20mm, industry standard (S/M 127-190mm, M/L 145-217mm): garmin.com S44 and S50 product page spec tables, corroborated by Garmin Malaysia S50 specification page.
- Approach S42 and S40 quick-release 20mm (Small/Medium 106-176mm, One Size 125-202mm): Garmin Malaysia specification pages, corroborated by the Approach S40/S42 owner's manual ("The device is compatible with 20 mm wide, standard, quick-release bands").
- Approach S12 quick-release 20mm (125-202mm): Garmin Malaysia S12 specification page; the S12 owner's manual documents the quick-release spring bar procedure.
- quatix 8 51mm QuickFit 26 (silicone 127-210mm, UltraFit 127-225, leather 135-213, metal 132-225) and 47mm QuickFit 22 (silicone 125-208, UltraFit 125-215, leather 132-210, metal 132-215): garmin.com quatix 8 product page spec tables for both case sizes, corroborated by Garmin Malaysia and Garmin Singapore quatix 8 pages.
- quatix 7X QuickFit 26 (51mm; silicone 127-210, leather and fabric 135-213, metal 135-225): garmin.com quatix 7X Solar product page. quatix 7 and quatix 7 Pro QuickFit 22 (47mm; silicone 125-208, leather and fabric 132-210, metal 132-215): Garmin Hong Kong and Garmin Singapore specification pages.
- tactix 8 51mm QuickFit 26 (silicone 127-210, UltraFit 127-225, leather 135-213, metal 135-225) and 47mm QuickFit 22 (silicone 125-208, UltraFit 125-215, leather 132-210, metal 132-215): garmin.com tactix 8 product page spec tables, corroborated by Garmin Malaysia and Garmin Singapore tactix 8 pages.
- tactix 7 QuickFit 26 (51mm; silicone 127-210, leather 135-213, fabric 135-213, metal 135-225): Garmin Malaysia and Garmin Singapore tactix 7 AMOLED and Solar specification pages.
- MARQ Gen 2 QuickFit 22 (46mm; bracelet and silicone 135-213mm): Garmin Malaysia and Garmin Singapore MARQ Gen 2 specification pages. MARQ Gen 1 QuickFit 22 (nylon 135-205, silicone and bracelet 135-213): Garmin Malaysia and Garmin Singapore MARQ specification pages.
- D2 Mach 2 47mm QuickFit 22 (silicone 125-208mm, leather 132-210) and 51mm QuickFit 26 (silicone 127-210, metal 135-225): garmin.com D2 Mach 2 product page spec tables for both case sizes.
- D2 Mach 1 QuickFit 22 (47mm; silicone 125-208, leather 132-210, titanium 132-215) and Mach 1 Pro 51mm QuickFit 26 (silicone 127-210, titanium 135-225): garmin.com D2 Mach 1 product page spec tables for both case sizes.
- D2 Air and D2 Air X10 quick-release 20mm, industry standard: D2 Air owner's manual ("The device is compatible with 20 mm wide, standard, quick-release bands") and D2 Air X10 owner's manual; Garmin prints no wrist circumference range for the D2 Air, so that cell stays empty.