True Wireless Sport Earbuds with secure, soft ear hooks. Features up to 3 hours of playback time at 100% volume. When the earbuds are not in use, they can be charged in its compact charging/carrying case. Micro USB charging cable included. Capacity (earbuds): 40mAh /3.7V (0.148Wh); capacity (case): 400mAh / 3.7V (1.48Wh); wireless range: 10m; playing time: 3 hours on max sound. Wireless version: 5.0; earbuds input: 5V/60mA; charging case input: 5V/250mA