Powered by Casio’s cutting-edge AiR sound engine 700 tones and 200 rhythms, plus songwriting tools Stunning piano sounds with damper and string resonance Beautifully polished top panel design with illuminated touch-sensor controls Designed to work with the free Chordana Play for Piano iOS/Android app Powerful stereo speaker system plus 2 headphone and 2 x 1/4" outputs Class-compliant USB port with no drivers or installation needed 88-note Smart Scaled Hammer Action Keyboard with simulated ebony/ivory key textures Bluetooth audio for playing along with your favorite songs Duet mode splits the keys into 2 equal pitch ranges Slim design that weighs less than 25 lbs. Optional 6 x AA battery power (AC adapter included)