1. Bluetooth version: 5.0 2. Material: plastic + metal 3. Battery capacity: 300mAh 4. Charging time: 2-3H 5. Talking time: 18H 6. Music playing time: 18H 7. Standby time: 300H 8. Speaker impedance: 32 ohms 9. Speaker power: 10mW 10. 40MM drive unit, strong bass effect 11. Retractable head beam, adapt to various head shapes, comfortable and stable to wear 12. High-recognition button control, simple operation 13. Rotation design, self-adaptive adjustment of rotation, can rotate and lay flat, easy to carry 14. High imitation protein lint, soft, skin-friendly and comfortable, making listening to songs more comfortable 15. Size: 199x159.85x77.35mm 16. Weight: 217g
