1.Bluetooth 5.3 

    Bluetooth chipset: JL 6973D4

2.Bluetooth profiles: AVCTP, AVDTP, A2DP 

3.Operating distance: 10 meters Class II

4.Frequency response:  20HZ-20KHZ

5.Charging Box Battery with protection: 300MAH 

6.Earbud Battery  : 25MAH

7.Talk time: About 2.5 hours                                                                   
8.Music playing time: Around 4 hours

9.Earbud standby time: Around 75 hours 

10.Easily charge Type-C port

11.Charging time: About  1.5 hours

12.Box charge earbud :  3 times