1.rechargeable backup battery charger for psp,mp3,mp4,phones 2.charger for phones,pda,mp3,mp4,game 3.li polymer battery Its capacity reach to 2200mah ... charge your device such as mobile phone,game player,ipod,MP3,PDA,MP4 and so on through optional cable and connector accordingly ... test and have one year warrant rechargeable backup battery charger for psp,mp3,mp4,phones