The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

Mouse - Movement Detection: Optical - Product Line: Perfit - Pointing Device Connectivity Technology: Wired - Movement Resolution: 800 dpi - Design: Left-handed Only - Additional Information: Mouse without Scroll wheel - System Requirements: Operating Systems: - Windows 95 - Windows 98...

Introducing the New Perfit Mouse Classic Plus (PMO5), Evolving from the original patented shape, the new version maintain the ergonomic integrity of the time-tested form while adding new productivity enhancing features....

Mouse - Movement Detection: Optical - Product Line: Perfit - Pointing Device Connectivity Technology: Wired - Movement Resolution: 800 dpi - Design: Left-handed Only - Additional Information: For "Medium Hand" Users - System Requirements: Operating Systems: - Windows 95 - Windows 98...

The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

Introducing the New Perfit Mouse Classic Plus (PMO5). Evolving from the original patented shape, the new version maintain the ergonomic integrity of the time-tested form while adding new productivity enhancing features....

The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

Mouse - Movement Detection: Optical - Product Line: Perfit - Pointing Device Connectivity Technology: Wired - Movement Resolution: 800 dpi - Design: Left-handed Only - Additional Information: For "Small Hand" Users - System Requirements: Operating Systems: - Windows 95 - Windows 98...

The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

Introducing the New Perfit Mouse Classic Plus (PMO5), Evolving from the original patented shape, the new version maintain the ergonomic integrity of the time-tested form while adding new productivity enhancing features....

The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

The new optical versions add the latest technology to the unique design of the original Perfit Mouse. A high precision optical sensor provides excellent cursor control. The Perfit Mouse Optical (PMO) places a scroll wheel above the thumb support, rather than on the top of the mouse to reduce the strain on the index finger, which is already heavily used for the primary mouse click....

Introducing the New Perfit Mouse Classic Plus (PMO5), Evolving from the original patented shape, the new version maintain the ergonomic integrity of the time-tested form while adding new productivity enhancing features....

New RollerBar Design for Effortless Control of the Cursor is 67% Longer than the "Classic" RollerMouse - Two more Buttons to extend versatility and flexibility- includes "Drag Lock" and "Double Click" functionality - Most Cost-Effective Mousing Investment On the Market Today...