OrigAudio Rock-It 3.0 Portable Vibration Speaker System for iPod iPhone and Standard 3.5 mm Jack
$39.99
Shark Tank Season 02
Powered by a built-in rechargeable battery * Charge for 2 hours and get 10 to 12 hours of play
The more hollow the object, the better the sound quality
Works with any audio device that has a standard 3.5 mm headphone jack