Compatible with Smart Watches that use standard 18mm, 20mm, 22mm spring bars:

18mm

For Asus Zenwatch2 1.45"/2 Small

For Fossil Q Venture/Scarlette/Tailor, for Fossil Gen 4 Q Venture HR, for Fossil Gen 3 Q Venture

For Huawei Watch/Fit/Women's

For LG Watch Style

For Withings (Nokia) Activité Pop/Activité Steel/Activité For Sapphire/Steel HR 36mm

For Ticwatch C2 Rose Gold

For Garmin Active S/Move 3S

For Michael Kors Sofie

20mm

For Samsung Galaxy Watch 5/watch 5 pro, for Samsung Galaxy Watch 4 40mm/44mm, for Samsung Galaxy Watch 4 classic 42mm/46mm, for Samsung galaxy watch3 41mm, for Samsung galaxy watch Active 2 40mm/44mm, for Samsung galaxy watch Active 40mm, for Samsung galaxy watch 42mm, for Samsung Gear sport, for Samsung Gear S2 classic

For Huawei watch GT3 42mm,for Huawei watch GT2 42mm, for Huawei watch 2

For Honor watch SE, for Honor MagicWatch2 42mm

For Amazfit GTS 3, for Amazfit GTS 2e, for Amazfit GTS 2mini, for Amazfit GTS 2, for Amazfit pop pro, for Amazfit pop, for Amazfit BIP U, for Amazfit GTR 42MM, for Amazfit GTS, for Amazfit BIP, for Amazfit BIP lite,for Amazfit bip 1S, for ZEPP E

For Garmin Forerunner 158, for Garmin Forerunner 55, for Garmin vivoactive 3, for Garmin vivoactive 3 music, for Garmin venu, for Garmin venu Sq, for Garmin vivomove 3, for Garmin vivoMove Luxe,for Garmin vivoMove style, for Garmin vivomove, for Garmin vivomove HR, for Garmin forerunner 245, for Garmin forerunner 245 music, for Garmin forerunner 645, for Garmin forerunner 645 music

For ticwatch GTH, for ticwatch E3, for ticwatch E

22mm

For Samsung galaxy watch 3 45mm R840, for Samsung galaxy watch 46mm, for Samsung gear S3

For Huawei watch GT 2e, for Huawei watch GT (42mm/46mm), for Huawei watch GT2 46mm

For Honor MagicWatch2 46mm, for Honor Magic, for Honor watch Dream

For Amazfit GTR 47mm, for Amazfit pace, for AMAZFIT stratos, for AMAZFIT 2 stratos, for Xiaomi color watch

For Garmin vivoactive 4,For Fossil Gen 5 Carlyle , for Fossil Gen 5 Julianna, for Fossil Gen 5 Garrett, for Fossil Gen 5 Carlyle HR

For Ticwatch pro, for Ticwatch pro 2020, for Ticwatch GTX