61 keys, 400 tones (13 Indian), 48 polyphony, 60 song bank tunes Rhythms/patterns: 100 built-in rhythms (12 Indian) and 50 dance music rhythms Metronome: Beats: Off, 1 to 9 (tempo range: Quarter note = 20 to 255) Digital effects : reverb (10 types), virtual hall, dance music effect Chordana play app connectivity Power Requirements: 6 x AA batteries/LAD-6 AC adapter ;Pedals: Standard jack (sustain, sOStenuto, soft, rhythm), One touch preset Tuning Control: A4 = 415.5 to 465.9 Hz (Initial Default: 440Hz) Add to the fun by linking the keyboard with the downloaded Chordana Play app in your smart device No matter who (or where) you are, Casio’s CTK-2500 portable keyboard opens up a whole world of music with 61 full-size keys, 400 high-quality Tones, and 150 built-in Rhythms including the all-new Dance Music Mode. Whether you're just starting out, or using batteries to write your next hit on a tour bus, the CTK-2500 delivers hundreds of Tones and Rhythms to jump-start your creativity. It's a perfect introduction to music-making, and a great-sounding way to have fun. Brand No Brand SKU 101024867_NP-1021570677 Model CTK-2500