This gadget is basically a wristband that charges almost any gadget! You need to first charge the wristband by plugging it in to your USB port. Once it is charged, you plug it into the gadget that needs charging. The wrist band comes with multiple cables which allows you to charge: iPhone & iPod, Nokia II (2mm), Nokia I (3.5mm), Mini USB (for Motorola/HTC/Dopod/MP3/MP4), Micro USB (Kindle, other phones & devices), LG, Samsung i900, Sony Ericsson, Sony PSP, NDS Lite and Nintendo DSi & 3DS. This gadget is great for extending the battery life of any handheld game system or cell phone while traveling! It only weighs 82 grams so it is not too annoying to carry around. On the band it has LED indicators that tell you how much battery life is left. You can even charge a device while you are using it! I think this gadget is awesome!! Just so you know it does not tell the time!