Features: Adopts advanced BT V4.1 technology, compatible with most BT-enabled devices(like for iPhone/iPad/Android phones/tablets/laptops, etc), supporting up to 10m transmission distance, easy to connect and use. Multi-functional speaker allows to switch modes among BT mode, TF card mode, U disk mode and AUX audio mode, providing multiple ways for enjoying music. It will bring great stereo sound quality, allowing you enjoying extraordinary music experience. Built-in HD noise-cancelling microphone for convenient hands-free calls, and it will offer clear communication effect. Supports FM radio, providing you much convenience to know all kinds of news. Built-in rechargeable Li-ion battery and you can charge it via connecting the USB cable once the battery has run out of power. Easy to control the buttons to power on/off, pause/play music, adjust the volume, switch last/next song and answer/hang up call.