Nokia N9 Bluetooth headset

Model: N9
Blue tooth edition: V2.0, compatible V1.5, V1.2, V1.1, V1.0
Bluetooth performance: The duplex sound track, supports the stereo sound
Wireless frequency: 2.4-2.48GHz
Transmission power: Class2
Transmitting range: 10 meters Telephone conversation time: 6 hours
Standby time: 100 hours
Duration of charging: 3-4 hours
Battery type: 130mAh
Earphone weight: 8g
Outward appearance size: 40 * 18 *9mm