Rapoo Wireless Optical Mouse 3100P - White

Plug-and-forget NANO receiver

So small and unobtrusive, you can plug it into a USB port and forget about it, and you can say goodbye to worry about lost receivers.
Up to 18-month battery life

With Rapoo's latest energy saving technology and power switch, you can use your mouse without power interruption for up to 18 months.
Reliable 5GHz wireless connection

Reliable 5GHz wireless transmission results in less interference from other wireless, Bluetooth and Wi-Fi devices.
System Requirements

Windows® XP/Vista/7, Windows® 8
Size:

59mm * 95mm