Universal Wireless Bluetooth in Ear Headset for iPhone, Samsung Galaxy, HTC, Sony, LG, BlackBerry and Motorola Smart Phones - Great for Tablets and Computers (Blue) Brand new and high quality. Support Bluetooth V3.0, Bluetooth A2DP and call. Output power: 2x20mW Frequency range: 2.401-2.480GHz Distortion factor: 1% Frequency response: 20Hz-20KHz 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 Sensitivity: 80dB Impedance: 32 ohms peaker Power: 2 x 18mW