REMAX TWS-1 Half Moon Shaped Bluetooth 4.2 Wireless Bluetooth Earphone with Charging Box(Gold)

Product specifications: 1. Bluetooth version: 4.2. 2. Transmission distance: 10m. 3. Distortion: 1%. 4. Frequency response range: 20Hz-20KHz. 5. Charge box battery: 500mAh/3.7V. 6. Headphone battery: 40mAh/3.7V (rechargeable lithium battery). 7. Battery capacity: 30mAh. 8. Talk time: 3 hours or so. 9. Music playback time: 2.5 hours or so. 10. Charging time: about 1.5 hours. 11. Standby time: about 80 hours. 12. Net weight of the product: 65g.