1.power:3W 2.input currency:3.7V 3.frequency range:118HZ 4.built-in Li-ion battery:500mA 5.SNR:more than 80db

specification:

Output power:RMS 2W THD=10%Frequency Response:150-18000HZ(+/-3dB)SNR:≥70 DbSpeaker:external diameter 45mm, magnetically shielded, 4ohm External USB cableBuild-in stereo FM radio Product size:74.5*50*52mmTF card special. Retractable cable to the computer. built-in lithium batteryPower can not be higher than 5.5v

picture show:

  

Aluminum mini speaker with LED panel