Don't you just hate it when your wireless mouse runs out of charge, and you have to either dock it or replace the batteries? Well, if a claim by HP is correct, that problem will only come up every couple years or so.
The HP X4000 and X5000 Laser Mouse have a 1600 dpi laser sensor and operates on the 2.4Ghz spectrum. The X5000 ($40) incorporates a touch sensitive scroll wheel and is rated for 24 months of battery life. The slightly cheaper X4000 ($30) forgoes the touch control, but rings in with an impressive 30 month runtime between charges.
As for the left handed mouse users in the crowd, you can relax – both mice are designed for ambidextrous use.
via hothardware
Early Mechanical Mouse
German company Telefunken published on their early ball mouse, called "Rollkugel" (German for "rolling ball"), on 2 October 1968. Telefunken's mouse was then sold commercially as optional equipment for their TR-440 computer, which was first marketed in 1968. Telefunken did not apply for a patent on their device
source:wikipedia
