J21 TWS Mini Bluetooth Earphone HD Call Ear Earphone

1. Bluetooth version: 4.1
2. Noise reduction version: CVC8.0
3. Working distance: open (unblocked) 25 meters
4. Battery capacity: 45mAh
5. Continuous talk time: about 2.5 hours
6. Continuous music listening time: about 3.5 hours
7. Headphone material: PC
8. Weight: 3.5g
9. Function: answer the call, hang up the phone, listen to music, call reminder, mobile phone battery display