Headset profile, handsfree profile and advanced audio distribution profile (A2DP). 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, stylish design gives great stereo quality sound to your favourite music and MP3 tracks – listening pleasure at home, in the office or on the move. User-friendly adjustability & comfortable wearing on both right or left ear. Transmitting power: class 2. Working distance range: 10 m. Frequency range: 2.4026GHz-2.480GHz. Charge time: ≤ 3 hours. Talking time: ≥ 10 hours. Listen time: ≥ 6 hours. Standby time: ≥ 135 hours.