The Rock-It 3.0™ Speaker is a popular portable vibration speaker system turns music from your device into vibration sequences! As seen on ABC's hit show "Shark Tank," the Rock-It 3.0™ Speaker turns ANY object in a speaker. The 1" x 2 1/2" speaker works with any device that has a standard 3.5mm headphone jack, and comes with extra sticky pad, USB charging cord, and rechargeable lithium ion battery for provide 10+ hours of play time. Attach the Rock-It 3.0™ Speaker to boxes, cups, file cabinets, and more for a unique sound experience! Add your custom imprint to the speaker to create tech favors for Prom, raffle prizes, and more.