Models: X04-91789, M-BD53, M-RK53, M-BA47

• ergonomic

Designed for comfort: enhanced grip support, finger grooves, curved shape. Uses  optical technology for smooth cursor control and accurate tracking on almost any surface. Other features include faster wheel scrolling, custom button programming, wireless technology
Microsoft IntelliMouse Explorer Product Website

Microsoft IntelliMouse Explorer

Logitech MouseMan Wheel M-BD53

Logitech MouseMan Wheel M-B47