... mp3 music player,mini mp3 player 2. compatible with all notebook,laptop,computer 3.USB speaker... 4.Use:Portable Audio mp3 music player,mini mp3 ... power amplifier chip,low powerloss,high efficiency.4.Uses 40mm the neodymium magnetism bottom of ... Accessories for phone are our main products.4.Provide the prices range based on the different ... or MSN for the inquiry. MP3 music player,mini mp3 player