Bluetooth 5.0 smart chip, the device supports automatic power-on and automatic connection, providing a strong and stable signal, faster and more stable transmission.
Charging Case for Continuous Power Supply
Large-capacity charging case to charge the headphones at any time. Each headset can be used as a separate Bluetooth headphone and two headphones can be used in rotation for a longer time.
Bluetooth 5.0 
Headphone battery capacity: 60mAh
Charging compartment battery capacity: 3500mAh
Connectivity: Wireless
Frequency response: 2.402GHZ-2.480GHz ISM Band
Charging Time: 1-2H
Music Time: 4-5H
Talk time: 4-5H