Hv 800 Wireless Music A2dp Stereo Bluetooth Headset Universal Vibration Neckband Style Headset Earphone Headphone for iPhone iPad Samsung Cellphones (Black+Blue) Brand new and high quality. Support Bluetooth V3.0, Bluetooth A2DP and call. Talk time: 8-15 hours, play time: 6-10 hours Music Playing Time: up to 10 hours Output power: 2x20mW Frequency range: 2.401-2.480GHz Distortion factor: 1% Sensitivity: 80dB Impedance: 32 ohms peaker Power: 2 x 18mW Charging voltage: Micro USB 5V Working current: 25-35mA Bluetooth A2DP Working range: 10m