HP Wireless Comfort Mobile Mouse Moonlight NU565AA The sleek moonlight symmetric design suits both left- and right-hand users while the rubber coating gives you enhanced control and comfort. High-precision laser sensor provides precise, smooth and responsive tracking. No need to travel with a mouse pad as laser tracking works on more surfaces than standard optical mouse tracking. No ball or cleaning required Advanced 2.4GHz wireless technology means less interference, longer range of operation and no wires to tangle. The micro-receiver is so small you can leave it plugged into your notebook (no more broken or lost receivers!) The micro-receiver also has a docking station build into the base of the mouse Features superb HP quality, automatic power saving features and energy efficient components