Sunglasses design earphone mp3 music player with 1G-8G memory Item Parametersmusic format MP3,WMACapacity 1GB-8GB(Built inL)Temperature -5-40 COutput frequency ... type USB2.0 Battery type high-capacity lithium polymerAccessory: USB wire,Charger,compact driver disk,instruction book,glasses case,Color ... type high-capacity lithium polymer Sunglasses design earphone mp3 music player with 1G-8G memory