1. Bluetooth 5.0; chip: JL AC6925B 2. Battery capacity: 1200mAh; Charging time is about 3 hours 3. Use time: 3 hours 4. Speaker unit: 52mm*2; power: 5W*2 5. Size: 400*74*60mm; Weight: 825g 6. Support Bluetooth, TF card, U disk, AUX, TWS and other modes