Guide
Integrated, Proprietary & Smartwatch Straps
Some watches don't use the usual pair of lugs and a spring bar, so a normal strap won't attach. Here's which watches in our index fall into that group, why, and how to get a different strap on anyway.
What “integrated” means
An integrated strap or bracelet flows straight out of the case with no standard lug gap, as on the Tissot PRX. A proprietary fitting has some kind of mount, but it's unique to the brand or model, like a G-Shock's resin lugs or a smartwatch's slide-in slot. Either way, a normal 20mm or 22mm strap won't attach on its own.
Integrated bracelet watches
- Tissot PRX 40 — Integrated bracelet — needs PRX quick-release straps; standard straps won't fit.
- Citizen Tsuyosa — Integrated bracelet — no standard lugs.
Your options are the maker's own straps, model-specific aftermarket straps shaped to the case, or (for some models) adapters.
G-Shocks and other resin Casios
- Casio G-Shock DW-5600E — Square G-Shock — proprietary resin strap; needs a DW-5600 adapter for 22mm straps.
- Casio G-Shock GA-2100 (CasiOak) — Proprietary lugs; use GA-2100 adapters for standard straps.
- Casio G-Shock GM-2100 — Metal-bezel CasiOak; GA/GM-2100 adapters needed.
- Casio G-Shock DW-6900 — Proprietary resin strap.
- Casio AE1200 (Royale) — Proprietary resin strap; 22mm adapters exist.
These use moulded resin straps attached with short bars inside the case's own lug shapes. Aftermarket adapter kits bolt into that space and convert it to a standard lug width so you can fit NATOs, rubber or leather. Check which width the adapter gives you before buying straps.
Smartwatches with proprietary bands
- Apple Apple Watch 45mm — Uses Apple Watch bands (42/44/45/49mm family).
- Apple Apple Watch 41mm — Uses the 38/40/41mm Apple Watch band family.
- Apple Apple Watch Ultra 49mm — 49mm band; 44/45mm bands also fit.
- Garmin Fenix 7 (47mm) — QuickFit 22 system — use QuickFit 22 bands or an adapter.
- Google Pixel Watch 2 — Proprietary Pixel Watch band mount — Pixel bands only.
- Fitbit Versa 4 — Proprietary Fitbit band mount.
Apple Watch bands come in size families. Apple's own guidance: bands for 38, 40 and 41mm cases are interchangeable; bands for 42 (earlier models), 44 and 45mm cases are interchangeable; and 46mm and 49mm bands also fit 44–46mm cases. Newer generations have reused some numbers, so check Apple's compatibility note for your exact model before buying. Garmin watches with QuickFit take QuickFit bands in 20, 22 or 26mm. Google Pixel Watch and Fitbit bands are proprietary to each model line.
Smartwatches that take normal straps
Samsung Galaxy Watch 6 (44mm) and the Samsung Galaxy Watch (46mm, Gen 1) and the Garmin Forerunner 265 use ordinary spring bars, often quick-release, so any strap of the right width fits. Look them up in the finder for the exact width.
Buying adapters: what to check
- Exact model compatibility. Adapters are shaped for specific case references.
- The output width, so you know which straps to buy next.
- Overall length. Adapters stick out past the case, so the watch wears longer on the wrist. See our wrist-fit guide.
- Screws versus spring bars. Screw-in adapters are more secure; keep a drop of threadlocker handy.