The newly re-designed Pen Mouse from Genius doesn’t keep you tied to a desk. With the 2.4GHz Pen Mouse, you can mouse on any surface – your hands, your jeans, or almost anything else you find. The mouse has been redesigned for a more comfortable grip and a pen clip has been added. Three DPI settings (400/800/1200 dpi) lets you adjust the sensitivity as needed, and a power-saving function saves your battery (1 AAA required). Pushing down on the mouse triggers the left button, and a right button and a “flying scroll” button are located at the top of the pen. The Pen Mouse works with Windows computers (Windows 7, Vista, or XP) and requires a USB port for connecting the tiny Pico receiver. It comes with a travel case to protect the pen and receiver when not in use. The Genius Pen Mouse is available in silver or carbon gray; it’s $49 in the US.