Bluetooth stereo A2DP headset for mobile phones and audio devices with AC charger. Enjoy music in stereo and still be able to take your telephone calls from a Bluetooth handset hands free. Compact and stylish design gives great stereo quality sound to your favourite music and enjoy music, call and VOIP at home, in the office or on the move. User-friendly adjustability and comfortable wearing on both right and left ear. Frequency range: 2.4GHz-2.48GHz. Transmitting power: class 2. Operating voltage: 3.6V. Operating current: ≤ 25mA. Standby current: 0.5mA. Working distance range: max. 10 m. Music time: about 3 hours. Talking time: about 3 hours. Standby time: about 100 hours.