General description vhbw offers a high-quality replacement battery designed for use with Fitbit Versa smartwatches and fitness bracelets. This battery is compatible with models FB504 and FB505, ensuring reliable performance and longevity. The package includes all necessary tools for installation, making it a convenient choice for users looking to replace their smartwatch battery. Technical specifications Battery type: Li-polymer Capacity: 150 mAh Voltage: 3.85 V Energy: 0.58 Wh Number of cells: 1 Compatibility and accessories Compatible with Fitbit Versa models: FB504, FB505 Replacement for Fitbit part numbers: R-41021555, 261827 Included tools: 2x suction cup, 2x sticky pad, 1x plectrum, 1x SIM card tray opener, 3x plastic holder/lever, 1x tweezers, 1x T3 screwdriver, 1x T4 screwdriver, 1x T5 screwdriver, 1x T6 screwdriver, 1x Pentalobe TS1 screwdriver, 1x Pentalobe TS4 screwdriver, 1x cross-head screwdriver, 1x split handle screwdriver