HoTone Skyline Blues, compact classic tube-style overdrive pedal for electric guitar and bass, gain control, volume control, tone control, fat switch, LED-status, true bypass, jack input & output, DC Input (center negative, 20Ma consumption) for 9V DC power supply (not included - optional 108096), dimensions 74mm (D) x 44mm (W) x 44mm (H), weight 190 g.