Compatible ModelsThe strap is compatible with TYKOIT smartwatch please confirm your watch model before ordering. MaterialMade of premium silicone material light weight soft and comfortable to wear Also it is durable Metal buckle clasp provides a simple yet elegant look. Band SizesSmall size fits 5.1 - 7.5 (band length: 87+104mm) Large size fits 6.1 - 9.0 (band length: 87+130mm) Precise multiple alternative holes allow you adjust the suitable size with comfortable touch feeling on your wrist. Easy InstallationUpgraded and improved-built quick release pins feature a stable and reliable performance very easy to install and disassemble no falling off or loose issue fit perfectly. Package Includes10 x Bands (Smartwatch is not included).