The Genius Energy Mouse is a 2.4Ghz wireless scroll wheel 1200dpi mouse that hides an extra feature inside its non-furry little tummy. It features a 2700mAh rechargeable Li-polymer battery pack that you can use to charge devices that have a micro USB connector. Four LEDs indicate charge status as well as the amount of power left. There are no worries that recharging your smartphone will drain the battery and render the mouse useless. A special battery reserve feature is dedicated just for mouse operation. The Genius Energy Mouse is available now from Amazon for $29.99