Mini Speaker/Sound Box:
1) Output (RMS): 3W+3W
2) Battery capacity: 700mAH
3) Machine SNR: >=80dB
4) CE, ROHS, FCC

TF card  Mini speaker

Features:

1) This speaker allows you to stream music from any audio devices, including mobile phones, MP3/MP4 players, CD, DVD PC's, laptops and so on via Aux jack.
2) Micro SD card supported, can play MP3 format songs in Micro SD card(up to 16GB).
3) USB HOST function, can play MP3 music in U DISK devices.
4) Built in 2 high-fidelity magnetically-shielded speakers.
5) Powered by built-in rechargeable lithium battery.
6) FM radio function is optional.

Specification:

1) Output (RMS): 3 W+3W
2) Response frequency: 150Hz~18KHz
3) Speaker: 1.7"x 0.5ohm
4) Machine S/N: ≥ 80dB
5) Charging power supplied: 5V 1A
6) Operating Voltage: DC 3.7V
7) Battery capacity: 700mAH
8) CE, ROHS, FCC certificated

Accessories:

Audio cable, Charging cable, User Manual