This unique wristband battery by Thanko will charge your gadget on the go. It is compatible with most of gadgets including the Sony PSP, the Nintendo DS Lite, all iPods of the third generation or newer, and a number of Japanese cell phones and W-Zero3 Sharp MID. Distributed across the wristband are power packs holding up to 1500mAh of power. On the side is a mini USB port, which allows the included twisted power cord to transfer juice to other gadgets. Weighs 80g and it comes with a price of $45.