Main technical parameters: 
 Rated Power: 3W 
 Frequency response :200-18000Hz 
 SNR: ≥ 80dB 
 Audio: MP3, MP4, CD, DVD, iPod, iPhone, GPS, PSP, cell phones, laptop computers. 

 Speaker unit: a miniature high-fidelity 1.5-inch magnetically shielded speaker 4Ω/3W 

 Audio Input: 3.5mm stereo plug 
 Power input: DC5-6V/1000mA power adapter; computer USB; 450MA lithium battery. 

 Material: anti-bacterial, environmental protection ABS material; 

 Weight: 0.06kg 



 Features: 
 1, the ultra-modern avant-garde style, high-end fashion 
 2, remote control, LED digital display, FM radio mode, high-fidelity speakers 
 3, in line with principles of acoustic design, special sound decoding, tone soft, structured, sweet, mellow, clear transparent 
 4, can be connected to mobile phone, computer, IPOD, MP3 MP4 players and other audio devices Built-in lithium battery, rechargeable read U disk MMC SD Card 

 Instructions for use: 
 ● Battery: built-in lithium battery, USB power, you can play music while charging. 
 ● Line in: audio input. Use of laptop computers, mobile phones or other players to do the output is connected to powered speakers to use the machine. 
 ● DC-5V: DC 5V (0.4-1A) power adapter, available USB power. 
 ● OFF / ON: OFF switch audio stop the music, put ON the audio output by the amplifier. 
 ● SD: the SD card into the hole. 
 ● MD-137 both the U disk MP3, SD card decoding, but also both the FM radio function, built-in USB port, directly into the U disk, SD card, MP3 music to play, is the U disk, SD card, MP3 of the most good partner. 
 ● MP3 with USB plug directly into the USB interface, no audio connection, you can play MP3 music. 
 ● line U disk or MP3, the music playback volume will be the last saved through the VOL + and VOL-to adjust the volume.