20mm Band Width:
for Samsung Galaxy Watch 3 - 41mm
for Samsung Galaxy Watch 42mm
for Samsung Galaxy Watch Active2 40mm
for Samsung Galaxy Watch Active2 44mm
for Samsung Galaxy Watch Active
for Samsung Gear S2 Classic
for Samsung Gear Sport
for Moto 360 2nd Gen Men's 42mm
for Fossil Q Gazer
for Huawei Watch 2 / watch 2 pro
for Pebble Time Round Large
for Withings Steel HR 40mm
for Huami Amazfit BIP
for Ticwatch 2 / Ticwatch E
for Garmin Vivoactive 3 / vivoactive 3 music
And other traditional or Smart Watches with standard"20mm"lug width.
22mm Band Width:
for Samsung Galaxy Watch 3 - 45mm
for Samsung Galaxy Watch 46mm
for Samsung Gear S3 Classic and Frontier
for Huawei Watch 2 Classic
for Moto 360 2nd Gen 46mm
for LG Watch, Urbane and R
for Asus Zenwatch 2 1.63"
for Cookoo Smart Watch
for Huami Amazfit Pace Stratos 2/2S
for Fossil Q Founder 2.0 / Marshal / Wander / Crewmaster / Explorist / Commuter / Grant
for Pebble Time / Pebble Time Steel / Pebble Time Classic / 2 / 2 SE
And other traditional or Smart Watches with standard"22mm"lug width.