This cajon is designed for the player to practice and play with their favorite tracks. Just plug an MP3 player in the input jack and play along to the music. The front plate and body is constructed of environmentally-friendly Siam oak and the cajon is easily transportable. It's powered by one 9V battery and the snare wires are adjustable with the included Allen wrench. 13 inch. x 14 inch. x 22 inch. with a weight of 15 lbs.