Bluetooth Version: V3.0 Bluetooth Chipset: CSR Profile Supported: HFP v1.5, HSP v1.2, A2DP v1.2 Product Range: 10 metres with no obstructions Battery Type: Rechargable Li-Polymer 100mAh Talk Time: 7hrs Standby Time: 320 hrs Charging Time: 1.5 hrs Weight: 19g Dimensions: 53.5x25x15 mm