HOPESTAR Wireless Bluetooth Speaker Stereo Soundbox Super Bass, support TF U Disk Hands-free Call for Phone, MP3, Radio and amazingly comes with 4000Mah Battery.
1, Powerful sound quality effect, super bass, small and exquisite.
2, Automatically search for Bluetooth, 10M and below receiving distance.
3, Support MP3, WMA format music files.
4, Support TF card, U disk, Bluetooth with a handsfree call.
5, Support external MP3 / MP4 / computer and other audio input function (AUX).
6, Lastly, can be used as an external headset.
7, Stereo sound, bass surging.
Battery 5D :4000Mah
Battery working time: 2-4H