Jeff Doin' Stuff - Logitech Marathon (M705) vs Control Plus (M510) vs Generic mouse - YouTube
Logitech Marathon M705 vs Logitech Signature M650: What is the difference?
Amazon.com: Logitech M705 Wireless Marathon Mouse for PC - Long 3 Year Battery Life, Ergonomic Shape with Hyper-Fast Scrolling and USB Unifying Receiver for Computer and Laptop - Black (Renewed) : Electronics