20MM:
For Garmin vivomove HR/HR Sport
For Garmin vivoactive 3/3t/3 MUSIC
For Garmin Forerunner 245/645 MUSIC
For GarminMove 3/Move Luxe/Move Style
For Samsung Gear S2 Classic
For Samsung Galaxy Watch Active
For Samsung Galaxy Watch 42mm
For Samsung Galaxy watch Active 2 40mm 44mm
For Samsung Galaxy Watch 3 41mm
For Samsung Galaxy Watch 4 Classic 42mm/46mm
For Samsung Galaxy Watch 4 40mm/44mm
For Samsung Galaxy Watch 5 40mm/44mm
For Samsung Galaxy Watch 5 Pro 45mm
For Samsung Galaxy Watch 6 Classic 43mm/47mm
For Samsung Galaxy Watch 6 40mm/44mm
For Huami Amazfit POP/ POP Pro
For Huami Amazfit GTR 42mm
For Huami Amazfit Bip/Bip U/1S
For Huami Amazfit Bip Pace Lite
For Huami Amazfit GTS/GTS 2/ GTS 2e/GTS 2mini
For Huami Amazfit GTS 3
For Huawei watch GT2 42mm/GT3 42mm
For Honor magic watch 2 42mm
For huawei Honor ES
And other traditional or Smart Watches with standard"20mm"lug width.