- Bluetooth 5.4; Chip: JL7006F4-2. Battery capacity: 400mAh; Charging time: about 2 hours-3. Usage time: 45 hours-4. Material: ABS； Size: 195 * 186 * 84mm; Weight: 210g-5. Supports Bluetooth, AUX and other modes-6. Support Chinese and English prompt sounds: double-click the power button when not paired-7. Interchangeable fabric ear tips