The vertical position of your hand makes using this mouse very comfortable for people who work intensively on a computer. It's a great help, for example, for users with arm, wrist and shoulder problems.
1.5 metre range  3.7V rechargeable battery (no need to take out) USB cable charger included Works with all Windows operating system from Windows 95 to current, also compatible with Mac.
Operates also with the following: PS/2 adapter, via USB Hub and via KVM switch.