It is Best-in class specs. It is easy to maintain and makes it a great pick. It is also made of premium-quality material. FEATURE : +NEXT/VOLUME + :Short press,under a song/thenext station.according to the long,the volume increwase. -ON A/VOLUME- :Short press,a song/On a radio.According to the long,The volume decreases. BOOT TO TURN IT OFF HANG UP :Short Press On/Long press 3sec onds hang up. CHARGING :Connect the charger USB charging. AUDIO I/O INTERFACE :External ear airport speaker audio input, Headphones audio output to external speaker. TF CARD SLOT :Insert TF card,playing card MP3 song files. WIRELESS /FM/TF :Function key to switch to each other,M english full name (Mode).
