Compatible Models: Fits for Amazfit GTS 2 Mini, Amazfit Bip/ Bip U/ Bip U Pro/ Bip Lite, Bip S, Amazfit Pop/ Pop Pro, Amazfit, Amazfit GTS/ GTS 2/ GTS 2e,Amazfit GTR Galaxy Watch Active 2, Gear S2 Classic, Samsung Gear Smartwatch. Water-proof, sweat-proof, replacement wrist strap only, no watch included. Material: Made of flexible and durable elastomer silicone material, softness is moderate, comfortable to wear. Best for high intensity workouts and sleep tracking, never fade or dim. Breathable: The holes on the band makes it more comfortable to wear and makes your skin breath freely . Ventilation Holes Design makes it wear cool and dry after you sweat during the sports