Logitech M705 MARATHON Wireless Wheel Mouse w/ Unifying Receiver. These are the original design with an application switcher thumb button located on the lower left side. All units have been cleaned, tested, and given new glide pads, although I do not replace the very tiny pad just above the battery door as it creates more problems.
Logitech MX518 Wired Optical Gaming Mouse M/N M-BS81A P/N
Logitech Marathon Mouse M705 Review
Vintage Off-White Logitech USB Wired Optical Wheel Mouse M-UA96
Logitech M705 Marathon Wireless Mouse, 2.4 GHz USB Unifying
Vintage Off-White Logitech USB Wired Optical Wheel Mouse M-UA96
Logitech M705 Marathon Wireless Mouse with 3Y Battery Life
Logitech M705 MARATHON Wireless Mouse 8-BUTTON Version w/ Receiver
Logitech Marathon Mouse M705 Review
Getting started - M705 Marathon Mouse – Logitech Support + Download
Logitech Marathon Mouse M705 Review
Logitech M705 MARATHON Wireless Wheel Mouse - 8-BUTTON VERSION
Logitech M705 Marathon Mouse
Logitech M705 Marathon Wireless Mouse with 3Y Battery Life
Logitech Marathon Mouse M705 Review
Logitech M705 Marathon Mouse