The only mobile (backpack) friendly guitar controller built to the specs of a real guitar. Measuring 16" and weighing just over 2 pounds, it's small but powerful. Designed to pair with your favorite Apple device; the jamstik has real frets, real strings, and real musical expression. With the jamstik, you can control 100's of midi music apps or software programs, and the list is growing. The patented finger-sensing system sees your fingers and tracks all of their fine nuances to guide the teaching experience; allowing you to practice or create anywhere.