Compatibility: The battery model is EB-BR500ABU, it is compatible with Samsung Galaxy Watch Active 1st 40mm SM-R500 series. Please carefully confirm the model of your smartwatch before purchase Premium Battery Cell Upgrade: Designed with a brand new, original SDI Li-ion cell, this battery ensures top-tier performance, reliability, and extended battery life. Engineered for durability, it delivers a consistent power supply to keep your device running at peak efficiency for longer. Included Adhesive: Battery adhesive is included for effortless installation. Tips: A new battery needs at least three full charging and full discharging cycles to complete the calibration Step-by-step Instruction: The battery comes with a detailed instruction manual to help you walk through each repairing process, you'll find it is an easy task for you to complete the repair yourself Comprehensive Toolkit: The kit has every tool you need for repairing, it's professional, safe and easy to use, help you to perform your repair efficiently GREEN FUSION for Galaxy Watch Active (40mm) Battery Replacement, EB-BR500ABU Battery Compatible with Samsung Galaxy Watch Active 40mm SM-R500, with Installation Instruction, Repair Toolkit