- Bluetooth 5.4 chip: JL JL7003F4-2. Battery capacity: 250mAh; Charging time: 2 hours-3. Use time: 28 hours; Standby time: 180 hours-4. Material: ABS；Size: 19518584mm; Weight: 198g-5. Support Bluetooth, AUX and other modes-6. Support Chinese and English prompt sounds: double click the power button when not paired