1.frequency range:90HZ-20KHZ 2.SNR:more than 80dB 3.Rated power:2*2.5W 4.power index:5V/1A 5.with nice sound quality

specification:

Output power:RMS 4W(2W+2W)THD=10%Frequency Response:150-18000HZ(+/-3dB)SNR:≥70 DbSpeaker:external diameter45mm, magnetically shielded, 4ohmExternal USB cableProduct 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 portable mini speaker