... .Music display. 4.HD microphone and speaker. 5.On/off,volume key 2013 Hot sales Walk-talkie Transceiver for mobile phone ... crisply and clearly on the other end of the callSide volume switch, convenient for you to adjust volumeBelt clip: clip it ... transceiver provide music playing, pause, speed up, rolling back and volume control button.3)Long endurance. Only with 2*AAA batteries, transceiver ...