Output power: RMS 3W x 2F requency:100HZ--18KHZ Speaker Specifications:aa36mmx2/4aa SNR:aa 75db Power:~5V-USB Mini-USB Head

Output power: RMS 3W x 2Frequency: 100HZ --- 18KHZ Speaker Specifications: Φ36mmx2/4ΩSNR: ≥ 75dbPower: ~ 5V-USB Mini-USB Head lithium battery: 3.7V BL-5C500mA Built

Suport USB   SDcard,,line in   with FM,NOKIA 0C battery of the back 

Color: blue, red, .Orange ,green, black

The latest mini speaker K02 support USB,SD card