CP0099L Features Distort its voice according to its connected surface Put the round head shaped speaker back， you can hear the acoustic music Mini and cute General Specs Color Blue Output Jack 3.5 mm audio jack Other Output USB 2.0 Speaker Power 1W Frequency 300Hz-10000Hz Sensitivity 78±3db Impedant 4Ω±15% Dimensions 8.3 x 8.3 x 2.5 cm