1. Speaker: 40mm.
2. BT specification: BT V5.0 JL6925.
3. Supporting agreements: A2DP, AVRCP, HSP, HFP.
4. Charging time: about 2 hours. Standby time: more than 200 hours.
5. Calls / music time: about 10 hours (80% volume).
6. Size: 185*167*76mm. Weight: 220g.