1. Bluetooth 5.1，AB5396A
2. HSP, HFP, A2DP, AVRCP.
3. Distance: 10m.
5. Playing leadtime: ≥4H
6. Talking time: 4H
7. Earphones Battery capacity :40mAh
8.Charging case capacity:300mAh
2.Answer call. Both earphones can use while talking
3.Next Song/Previous Song
4.Auto power on auto-pairing after taking out from the charging case.
5.Active Noise Cancellation to 25db