Features:
Built-in 2400mAh lithium battery, long time play music.
Connection in many ways, like 3.5mm AUX connection, bluetooth connection.
Support to TF card(Max. 32G) and U flash disk(Max. 32G). 
Small body, big sound.
Hands-free call. It is convenient to connect.
Built-in Noise canceling function. Make the sound more clear.
Support to multi-points connection, can connet to two devices at the same time. Also can adjust volume and switch songs.