Obsoletes the Logitech C615.
https://secure.logitech.com/en-us/products/mice/m525-wireless-mouse.html [ 1 ] was https://secure.logitech.com/en-us/product/wireless-mouse-m525 [ 2 ] was https://secure.logitech.com/en-ca/product/hd-webcam-c525?crid=34
Obsoleted by the Logitech C525.
Probably the best mouse ever made, whose style has never been matched.
The fact that it has a unique style makes it unfortunate and impossible to replace.
Just some ancient notes when using PCLinuxOS.