Compatibility: Compatible with Amazfit T-Rex/T-Rex Pro/T-Rex 2/T-Rex 3/GTS 4/Bip 3/Active/Active 2/Active 3 smartwatch.(little small for the T-Rex2/T-Rex3)
Inner Width: 20mm
Features: Safe, Non-slip, A perfect substitute High quality silicone material, will not break off easily Ideal to solve the problem of coming loose and falling off The perfect choice to make your watch look new! Not easy to fall off and keep extra length. You don't have to spend money to buy extra watch strap
