best rechargeable wireless bluetooth speaker 5w 10wproduct description Classic 5W bluetooth speaker,Website:http://www.usb-pro.com, with big speaker, good choice for party or outdoor activiities.Produc parameters Material: MetalColor: Black, Blue, RedBluetooth version: V4.0Protocol: A2DP,AVRCP,HFPRange: 10 metersPower Output: 3WStandby time: 300 hoursFreq: 20Hz-20KHzS/N: No less than 90dBCharging ...