Alesis Recital Pro, Stage Piano, 88 Keys Hammer action keyboard with adjustable velocity sensitivity, Built-in recording function, 128 Voice polyphony, Metronome: 30 - 280 BPM, Effects: Modulation, Reverb, Chorus, USB-MIDI output for use with exercise software or virtual instruments, Inputs: 6.3 mm jack input (Sustain), Outputs: 3x 6.3 mm jack outputs (2 x Master, 1 x Headphone), USB, Speakers: 2x 20 W speaker woofers, 2 x 10 W tweeters, Power supply: 6 D-batteries or external power adapter (12 V DC / 2 A), Dimensions (W x D x H): 1305 x 350 x 145 mm, Weight: 11.8 kg, Includes: Power adapter, music stand, user manual, safety and warranty information@+*12 Built-in premium sounds with split function and layering:*@+@+, Acoustic piano, Acoustic piano (bright), Electric piano, Vibraphone, Organ, Church organ, Harpsichord, Clavi, Synth, Strings, Acoustic bass, Double bass