... .Input : 5.5v+-0.5V 500mah Output : 5V 800mah Portable Mobile Charger Backup Battery for nokia N97 mini N900 X3 X6 ... device at the same timeBrand New, Retail PackagingCompatible with (Not Limited to): Micro USB Devices Nokia: C3, C5, C6, E5, N8 ... , N81 8GB, N82, N900, N97, N97 mini, X3, X6 Portable Mobile Charger Backup Battery for nokia N97 mini N900 X3 X6 ...