The Expert Mouse Wireless Trackball gives you the freedom to be hyper-productive without being limited by a USB cable. The trackball can be paired through Bluetooth® 4.0 LE to save a valuable USB port, or connected via USB nano receiver. TrackballWorks™ software offers incredible customization, and optical tracking technology offers smooth, precise cursor control. Plus, our award-winning Scroll Ring lets you quickly scan up and down web pages or long documents. Add it all up and you get exceptional comfort and ease-of-use from the brand that has set the industry standard in trackballs for more than 30 years. Wireless connection via Bluetooth® LE or USB nano receiver Compatibility with Bluetooth 4.0 LE: Windows® 10, 8.1 and Mac OS X 10.8 and later* TrackballWorks compatible with Mac only when using 2.4GHz connection Kensington worked directly with Microsoft to provide professional-level solutions that look as good as they function, so you can work like a pro. Optimized for your Windows 11 Trackball Functions TrackballWorks™ software lets you customize all 4 buttons, adjust cursor speed DiamondEye™ optical tracking technology for premium cursor control and accuracy Award-winning Scroll Ring lets you scan up and down pages with ease Large ball is designed as a perfect sphere to provide exceptional precision Detachable wrist rest supports hand and wrist for ergonomic comfort Ambidextrous design works equally well for both right-handed and left-handed users Auto-sleep helps conserve AA battery life Compatibility with USB receiver: Windows® 10, 8.1, 8, 7 and Mac OS X 10.8 and later

System requirements
Windows operating systems supported	Y
Mac operating systems supported	Y
Other operating systems supported	ChromeOS
Weight & dimensions
Width	177.8 mm
Depth	101.6 mm
Height	260.3 mm
Weight	635 g
Power
Power source	Batteries
Battery type	AA
Battery technology	Alkaline
Packaging data
Quantity	1
Packaging content
Receiver included	Y
Wireless receiver interface	USB Type-A
Receiver type	Nano receiver
Other features
Compatibility	Surface Book 3, Surface Go, Surface Laptop 1 (13"), Surface Laptop 5 (15"), Surface Pro 8, Surface Book 1, Surface Book 2, Surface Go 2, Surface Laptop SE, Surface Pro 6, Surface Pro 9, Surface Studio, Surface Studio 2, Surface Studio 2+, Surface Laptop 3, Surface Laptop 4, Surface Laptop 5 (13.5"), Surface Pro 5, Surface Pro 7, Surface Pro 7+, Surface Pro X, Surface Go 3, Surface Laptop Studio, Surface Laptop 2, Surface Laptop Go 2, Surface Pro 4, Surface Laptop Go
Compatible operating systems	macOS 10.9; macOS 10.10 or above; macOS 10.13 or above; macOS Sierra 10.12; Windows 7; Windows 8; Chrome OS 44 or above; Windows 10; macOS X 10.11; Windows 7 or above; Windows 8.1; macOS 10.8; macOS 10.9 or above
Connectivity technology	Wireless
Design
Form factor	Ambidextrous
Product colour	Black
Mouse
Purpose	Office
Device interface	RF Wireless + Bluetooth
Movement detection technology	Trackball
Scroll type	Ring
Buttons quantity	4
Buttons type	Pressed buttons
Movement resolution	400 DPI
Programmable mouse buttons	Y
Number of scroll wheels	1
Scrolling directions	Vertical
Frequency band	2.4 GHz
Bluetooth version	4.0
Bluetooth Low Energy (BLE)	Y
Sensor type	Optical
Trackball diameter	5.5 cm
Logistics data
Harmonized System (HS) code	84716070