1. Material: ABS.
2. BT 5.0, chip: Blue trum 5335B.
3. Battery capacity: 90mAh, charging time is about 2 hours.
4. Talk / music time: 6 hours. Standby time 200 hours.
5. Cable length: 75cm. Weight: 16g.
6. BT audio receiver, so that 3.5mm wired headset has BT function.