1. louder speaker
2. compatible with USB, SD,MMC card
3. factory private model
4.compact lightweight
5 rechargeable batte

Features:    
Suitable for devices equipped with a 3.5mm audio jack, including cell phones, MP3 players, portable CD players and laptop/desktop computers.      
Digital FM radio support.                                                                                                           
Built in 2 inch High-fidelity magnetically-shielded speaker. Bring heart shaking sound effect.     
SD/MMC/MS card and USB flash disk support    
With standard mini USB recharger port, power adapter is optional.     
 With Calendar, clock, alarm clock, FM radio and recording functions     
LCD screen with backlight , display lyric   

  
Specification    
Output(RMS):3.0W x 2      
Speaker: 4Ω 3W    
Input Sensitivity:: AUX 600mV /FM 500mV /SD \USB 450mV    
Separation:≥80dB    
Distortion:1%(3.7V/1K/1W)    
Machine S/N: ≥80dB    
Charging power supply:DC 5V    
Operating Voltage: DC 3.7V    
Battery capacity: 1000mA