Features: Perfect Compatibility Specifically for Smartwatch, this back cover assembly with integrated battery ensures compatibility and restores device's original functionality. Construction Make from high quality plastic and metal materials, this component offers excellent impact resistance and wear protections, safeguarding internal components effectively. Ideal for users experiencing back cover damage or battery issue, smartwatch repair technicians seek quality replacement parts, and DIY enthusiasts look to enjoy repair projects. Suitable for scenario such as routine maintenance, accidental damage repair, or upgrading to a higher capacity battery for extended usage, ensuring your smartwatch stays in condition. Enhances your learning experience by using this product in electronics repair courses, providing students with practical knowledge on replacing smartwatch components efficiently. Specifications: Material: Plastic Diameter: About. 1.81in Package Includes: 1 Set Back Cover note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.