Logitech M545. Movement detection technology: Optical, Device interface: RF Wireless, Movement resolution: 1000 DPI, Buttons type: Pressed buttons, Buttons quantity: 4, Scroll type: Wheel. Power source: Batteries. Product colour: Black

Extra control right where you need it
Two customizable thumb buttons make it simpler and faster to get things done.

A new, more powerful scroll wheel
The new Dual-Axis wheel gives you instant access to the App Switcher and Charms Bar.

Our smallest receiver ever
Just 3 mm long, our plug-and-forget pico receiver practically disappears in your computer’s USB port.

Work and play longer
You’ll get up to 18 months of battery life from a single AA.

Two extra thumb buttons
Extra control is right where you need it, so it’s simpler and faster to get things done. They come programmed for Windows® 8 Start screen and Desktop switching functions, but can be configured to do exactly what you want them to.

New Dual-Axis wheel
You get smooth scrolling, plus instant access to the Charm Bar and App Switcher, so you can experience new Windows® 8 navigation—effortlessly and confidently.

Plug-and-forget pico receiver
Just 3 mm long, our smallest-ever wireless receiver practically disappears in your computer’s USB port. Since there’s no need to unplug it when you move around, it’s ideal for portable computers like laptops and Ultrabook™ devices.

Unifying-ready
Connect up to 6 Unifying-compatible devices to the same receiver. Add a keyboard, switch between mice, mix and match to fit your lifestyle. All without having to change receivers or sacrificing another USB port.