The speakers consist of 30mm drivers with 16-24,000Hz frequency range, and they will work up to 10 meters from the source. The earphones are available in four different colous - black, white, silver and pink. It supports any devices with an A2DP audio profile, designed for listening to music wirelessly. The Li-ion battery provides 12 hours of playback or up to 200 hours of standby time, with recharging approximately three hours. from Stereo Bluetooth Earphones the DR-BT140QP
