Carrier frequency : 2.4GHZ+Bluetooth

Frequency range : 20 Hz – 20 KHz

Working distance :up to 30 m

Charging time : 2-3 hours

Working time : 10-12 hours

Battery capacity : Li battery 400mAh

TX connector : 3.5MM jack in;Optical in;USB-C (Power)

Build-in Mic

Automatic power on

Treble/Mid/Bass EQ mode

Adjust left and right Balance(Removable cover for right earmuff)