Item Type: Sports Smartwatch WristbandMaterial: NylonSpecification: Approx. 22mm / 0.9in Package List1 x Sports Smartwatch Wristband2 x Screwdriver1Suitable Models: This sports smartwatch wristband is suitable for Amazfit T Rex and for T Rex Pro and can do the perfect matching. 2Nylon Material: Our sports smartwatch wristband is made of nylon material and braided, soft and breathable, elastic and comfortable wearing. 3Washable and Skin Friendly: This sports smartwatch band is washable and skin friendly. 1 key spring bar, easy to install and remove without any additional tools, quick strap change in 10 seconds. 4Adjustable Stainless Steel Metal Buckle: Smartwatch band adopts stainless steel buckle which can be adjusted. Easily slide adjustment to fit your wrist. 5Sweatproof: This sports smartwatch band strap is sweatproof and very suitable for swimming and running. Lightweight and great replacement.