Bluetooth Version: V4.0+EDR Bluetooth Profile: HSH,HSP,A2DP Radio Freq: 2402-2480MHz Transmit Power: Class II Receiver Sensitivity: -92bm Charging Voltage: DC 5V Battery Type: Rechargable Li-Polymer 100mAh Talk Time: 7hrs Standby Time: 320 hrs Charging Time: 1.5 hrs Weight: 22g Dimensions: 55x25.5x15 mm