Technical specifications : Dimensions: 70 x 30 x 121 mm Weight: 112g (without battery) Jacks and terminals: MUTE IN, AUX IN, PHONES (headphones), USB Controls: VOL, Reverb, Sound (Player/Audience), Power ON/OFF Brass Resonance Modeling™: version 2.0 Power: AA alkaline or nickel-metal hydride batteries x 2 (3V DC) Included: cable, earphones, USB cable