Docooler Mini Hamburg Speaker for iPhone iPad iPod Laptop PC MP3 Audio Amplifier (Blue) Cute and stylish appearance; shapes like a hamburg.Pocket size speaker, compact but no discount in sound quality. Compatible with all line in audio source such as iPod/iPhone/MP3/Phones or anything else with a 3.5mm headphone socket. Build-in high capacity rechargeable battery, support long time music playing. LED indicator stands for power-on or charging status. Perfect for both home use and travel use.