Multi-Function Speakers.
We are manufacturers of MDS-805 Multi-Function Speakers. It Work with all audio sources with a 3.5mm jack. We have good price and high-quality.

MDS-805
* Product Size: 20x13x11cm 
* Qty/ctn: 20Pcs
* Gross Weight: 24Kgs
* Carton Size: 82*44*29cm 

Features:
* SD card support, USB Flash Support, FM radio
* MP3 Format Decoder
* Work with all audio sources with a 3.5mm jack. 
* LED display, built-in rechargeable battery

Specifications:
* Power Supply: DC 5V(li-lion Battery inside) USB power cord
* Output Power: RMS 3w
* Driver Unit: 4ohms
* Frequency Response: 65-18KHz
 

Support:
* SD/MMC card
* USB flash
* FM radio
* Built-in Rechargeable Battery
* Line-in Function