... 2.material:plastic 3.Audio format:MP3,WMA 4.Battery Life:8hours 5.Certificate:CE,FCC,ROHS product name:card music player,card mp3 player,card mp3 ... speedSLC:5.0~6.0MB/S MLC3.5~4.0MB/SWrite speedSLC:4.0~5.0MB/S MLC: 1.5~2. ... more solid colors(includes white,gray,and black)2.Process color printingworks with most productsRequired for graphics ... to clients requirementCertificate: CE,FCC,ROHS card mp3 player