CP147B This super mini hamburger speaker looks very cute， playing on the centre of your palm. It is a good companion for most electronic devices with 3.5mm ports like MP3， MP4， music phones， portable gaming devices， iPod， Mini Disc Players， Portable CD Players， Notebook PC etc.   Hamburger shaped speaker. Super mini size design let it play on the centre of your palm. Offers hi-fi and rich sound quality. Magnetic shielding allows for placement next to computer monitors without causing interference. Suits for most electronic devices with 3.5mm ports like MP3， MP4， music phones， portable gaming devices， iPod， Mini Disc Players， Portable CD Players， Notebook PC etc. Built-in rechargeable lithium battery powered via USB charging cable. Charging Time: 6-8 hours. Diameter: 5.2 cm (2.05 inches). Mini Hamburger Shaped Speaker Super mini size design lets it play on the centre of your palm. 2 in 1 cable with USB 2.0 and 3.5mm plug