It combines premium durability with effortless power management, and features a built-in 800mAh battery that provides up to three full recharges. Its magnetic snap-on design enables effortless charging, while the real-time power display and USB-C fast charging (2.5 hours) add convenience. With IPX4 splash resistance and reliable performance from 0°C to 45°C, it's the perfect power companion for your Osight X/X GN. Battery Capacity:800 mAh 3.87 V (3.1 Wh) Voltage:3.87V Material: AL6061+PC Power Source:Built-in 800mAh Rechargeable Lithium Polymer Battery Charging Type:USB-C Charging Working Temperture: 32~113°F (0~45â„? Dimensions (Length x Width x Height): 1.85 x 1.38 x 1.73 in ( 47 × 35 × 44 mm) Weight: 1.76 oz (50 g) Waterproof: IPX4