UIBS - 3177
Frequency response range:100hz-20Khz
Signal-to-noise ratio:84db or higher
Sensitivty:80db+2db
The output power:3WX1
Distortion rate of I16 or less
The speaker specification:40 3W 45mm
Input power supply:DC5V-500MAH
Working voltage:3.0to5.5V
Playing time/charging time:180min/1 20mi
Per
piece
