The Roland HPD-15 HandSonic Percussion Controller is a pressure-sensitive 10" rubber pad designed to be played with bare hands. It has 15 parts that play up to 15 sounds simultaneously. The Roland HPD-15 comes with 300 sounds from Latin America, Asia, and India, plus electronic drums and sound effects. Create and save your own sounds in 80 user patches. Powerful realtime controls include a D-Beam, dual ribbon controllers, and 3 control knobs. Also features a built-in sequencer with practice patterns and metronome, MIDI In/Out, dual-trigger input, and hi-hat control jack. The Roland HPD-15 is 15-7/8" x 15-7/8" x 3-7/8" and weighs 7 lbs.