Features: With intelligent voice function. Support NFC(Near Field Communication), BT and hands-free. With Line-in function,perfect addition to your iPhone, iPod or MP3/MP4 players and so on 3.5mm interface player. Built-in Li-ion battery(300mAh), directly connect with PC or AC adapter for re-charging. Led light with 4 colors (Red, Blue, Yellow and Green) flashing, giving you stunning visual effect. 3 keys operation, easily to use it. Comes with 3.5mm audio line and USB charging cable. With on/off switch to save battery life while in not use. High quality ,Portable and fashionable.