Lexar JumpDrive Firefly 8 GB USB 2.0 Flash Drive JDFF8GB-431 (Charcoal) Provides an emergency power source when away from power outlets. Battery is easily replaceable and lasts for up to one year Works with multiple gadgets, including mobile phones, iPhone, Bluetooth headsets, smartphones/PDAs, MP3 players Compact lightweight design - convenient for travel or emergency use. The indispensable power source for all your portable electronics, Solio gives you power whenever and wherever you need it Portable gaming devices, digital cameras, GPS and much more (tips for many devices come included. Optional tips available for other models.)