MiniSuit Portable High Performance Compact Dual Speakers for Universal MP3 Players and Tablets-Black Compatible with all MP3 players, laptops, tablets, music-enabled phones, iPods, iPhone, iPad, and any device with a 3.5mm audio jack Amplify your music in two different styles; vertically or horizontally through magnetic closure. Built-in rechargeable battery lasts up to 8 hours of Playback Time (280mAh) Includes portable pouch and volume-control USB charger/cord