FEATURES: 1. Light,reusable and easy to operate. 2. A safe stream of power to charge or talk longer on your cell phone. 3.International travel friendly. 4.One replaceable AA battery OR use with rechargeable batteries for optimum savings. 5. More economical than any competitive product or buying an additional battery. 6. A revolutionary solution! 7.Emergency uses-power outages 8.charge about 45-100 minutes,one AA battery capacity can move to the battery of MP3 MP4 IPOD PSP.According to AA battery and mobile,mp3 mp4 ipod psp,can use for 2-8 hours. HOW ITS WORKS: Emergency charger is simple to use,just follow these steps: 1. Unsecrew bottom and load a single AA battery into the emergency charger. 2. Connect your mp3/mp4 ,mobile phone ?pecific connector to the chrge. 3. Connect your mp3/mp4 ,mobile phone to the connector and the charge LED lamp will begin light. 4. Your mp3/mp4 ,mobile phone indicates that it is charging. NOTES ON USE: 1. Rechargeable batteries should be fully drained when using in conjunction with the product for best use. 2. Replace aa battery if the LED lights do off. 3. First connect the unit with the mp3/mp4 , mobile phone connector and then to the mp3/mp4 , mobile phone for bestresult. 4. Take out the AA battery when you do not charge. Q.T.Y: 100PCS N.W: 6KGS G.W: 7KGS MEAST: 76*39*35