Microsoft designed its Wireless Wheel Mouse to deliver two-channel radio frequency technology you can depend on--giving you the flexibility you'd expect from wireless technology, and the reliability you expect from Microsoft. Wireless freedom lets you free yourself from desktop clutter and extra cables. The two-channel radio frequency receiver has over 200 unique codes to prevent interference, which allows you to place the receiver out of sight. Faster wheel scrolling lets you simply roll the wheel to move around in documents--no more clicking the onscreen scroll bar repeatedly--saving you time and effort. The ambidextrous design is comfortable whether you mouse with your left or right hand.