*SNR: 30dB; NRR:25dB.

--Built-in Bluetooth for mobile talking and music listening.

--Built-in Radio with switch key and Volume adjusting key.

-External microphone with flexible arm and Unidirectional microphone, for talking at high nosie condition

--Channel memory function,8 different preset channels.

--Digital display screen with low battery indicator.

--Input jack for recharging. Connecting cable included.

--Auto search and frequency scanning function.

--Built-in antenna with high reception sensitivity.

--Comfortable ear cushion for wearing.

--Powered by 2000mAh Rechargeable Lithium batteries.