Pink Portable Wireless Bluetooth 3.0 Headset Stereo Headphone Earphone Mic 2.4GHz EDR Battery Voltage: 3.7V,Bluetooth Working range: 10m,Output power: 35mW Frequency range: 2.401-2.480GHz,Distortion factor: ?1%,Frequency response: 20Hz-20KHz Working Time: Music/8h,Talk/10h,SNR: S/N?Y95,Signal to noise ratio:?Y105DB,Charging Time: 3 hours Compatible with bluetooth enabled devices, such as iPhone 5s/s/4s/4, iPad 5/4/3, iPod, Sumsung Galaxy, most computers, laptops, smart phones Supports Bluetooth V2.1 version,Charging voltage: USB 5V,Working current: 25-35mA