High Quality 580mAh Battery for Samsung Gear S3 Frontier/Classic   Package Content: 1x 580mAh Li_ion Battery (Watch not include) Compatible with: Samsung Gear S3 Frontier SM-R765T ( T-Mobile )   Package Description High Power 580mAh Li_ion Battery Quantity:1 * This battery has the same dimension as your stock battery. * Brand :Unbranded/Generic * Voltage: 3.85V. * Battery Capacity : 580mAh * High quality Li-Ion battery. * Battery Type: Lithium Ion.   * Integrated microchip prevents overcharging and lengthens battery life. * The best replacement spare battery for your phone. * Our battery is sent out with little or no power, so please charge it for about   6 - 12 hours before using. * The battery operation time depends on conditions such as: Transmitting   power level, Signal (distance between the phone and the base station),   Network parameters defined by the operator.