Mobix Wireless Bluetooth Handfree Sport Stereo Headphone Headset For Smart Phone (Without Retail Box) (Pink) Brand new and high quality. Support Bluetooth V3.0, Bluetooth A2DP and call. Keys: Key(NEXT),Key(PREV), Switch, Multi-function Key. Charging voltage: Micro USB 5V Working current: 25-35mA Bluetooth A2DP Working range: 10m Output power: 2x20mW Frequency range: 2.401-2.480GHz SNR: S/N95 Charging Time: 2h-3h Talk time: 8-15 hours, play time: 6-10 hours Music Playing Time: up to 10 hours Frequency Response: 20 ~ 20000Hz CSR BC05 stereo Bluetooth chip, which guarantees high fidelity,stable performance and excellent communication effect. Up to 7 hours Talk/Music time and 200 hours standby time plus Multipoint Dual Connection Technology