Grandmax Tweakers Mini-Boom Speakers for iPod/Mp3 Players & Laptops (Red) iPod/MP3 Players & Laptops Pop-up chamber for bass Enrichment Built-in Rechargeable Lithium Battery and Retractable Audio/Charging Cables Magnetic base locks 2 speakers in one pocket sized device for ultimate mobility Works with every media device and laptop with 3.5mm audio jack including the iPhone