ANC(Active noise cancelling) and ENC (Environmental Noise Cancellation) ** Charging case with OVP protection**
Bluetooth: V5.1
Bluetooth Distance: 10-15m
**Earphone with  Li-on battery protection 
Chipset: JL 7006
Play Time: 6-8 hours
Battery Capacity: Earbuds 40mAh; 
Charging case 320mAh
Speaker: moving coil type Φ13/32 ohm *4 microphones
Charging Time: 1 hour