Bluetooth True Wireless Earbuds ETW9

1.Bluetooth Version:  V5.0

2.Earbuds battery capacity:  3.7V，40mAhx2

3.Charging case battery capacity:  450mAh

4.Working range: 10M

5.Music play time: 4H

6.Earbuds standby time: 40H

7.Earbuds charge time: 1H

8. charge time：1.5H

9. case size: 60.7x51.8x30.2mm

10.Mini Size and comfort wearing