Size:8.7*4.5*9.5cmBluetooth 3.0Playback time: 4-6 hoursCharging time: 3 hoursBattery: 3.7V/500 MAHConnection range: up to 30 feetFrequency Response: 120Hz-22 KHzSupport A2DP and and built with a 5W speaker. It can streams incrediable stereo sound with full range output， crystal clear articulate high end.It has built-in MIC Bluetooth speaker and hands-free function， so you can conveniently pick up a call by this mini speaker in car， bathroom， at home or office， anywhere during it is connected to your Smartphone.