A handy pocket-sized iPhone or iPod backup battery pack Key Benefits & Features Rechargeable via the same USB (Universal Serial Bus) cable that you use to charge your iPhone or iPod Gives loads of extra backup power for when normal charging facilities are not available Included Mobile Power Station Mobile Power Stationis backed by our 30 Day Satisfaction guarantee, If you don't get the results you desire, then you can simply return within 30 days for a full product price refund.