Product Features Versatile and perfect for busking musicians 2 x 3" speaker. 2 x .08 watts ouput 4 built in drive sounds 3 DSP built in effects 80 built in drum pattens to play along with 3.5mm headphone and 3.5mm AUX in jack sockets Built in tuning function Full metal construction 2 x 3" speaker, 2 x 0.8 watts output. 4 Drive Sounds, 3 DSP Effects, 80 Drum Rhythms. Powered by a DC 9V Adapter or AA battery (x4) power supply.