Logitech Wireless Mouse M320, Silver
Right-handed contoured design: Curved soft rubber sidegrips for extra comfort
2 year battery life: Go longer between battery changes(Battery life may vary based on user and computing conditions)
Logitech Advanced Optical Tracking: Enjoyultra-precise and responsive cursor control
Plug-and-forget Nano receiver: Reliable wirelessconnection with a small receiver that can stay in your computer's USB port
Wide compatibility: Works with Windows 8/7/Vista/XP,Mac OS X 10.5 or later, Chrome and Linux Kernel 2.6 operating systems