Microsoft Quality at an Entry-Level Price Optical Technology-1000 DPI Scroll Wheel 3 Buttons

East to Use on the Go Easy to Set Up and Use Optical Technology Comfort for Either Hand

Goes with You, Works with You Snap-in Receiver Scroll wheel Comfort for either hand

Convenient Wireless Comfort 2.4 GHz for a Confident Connection Comfort for Either Hand Micro Transceiver

The Right Tool for The Job The reliabilty and comfort of the Comfort Mouse 3000 will help you get the job done, even if you're playing

BlueTrack Technology Comfort for Either Hand Snap-In Transceiver Reliable 2.4-GHz Wireless 8-Month Battery Life

Comfort Wherever You Go Works on More Surfaces than Optical or Laser Technology Nano Transceiver-Snap in and Go Battery Status Indicator and On/Off Switch Comfort for Either Hand

Comfort Wherever You Go Works on More Surfaces than Optical or Laser Technology Nano Transceiver-Snap in and Go Battery Status Indicator and On/Off Switch Comfort for Either Hand