*SNR: 30dB;  NRR:25dB.

--Built-in Blue tooth for mobile talking and music listening. 

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

--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 3 pcs AAA battery or rechargeable battery