The Kensington Expert Mouse--The premiere trackball for those who want reliable, accurate and precise, optical tracking. The award-winning scroll ring allows super smooth navigation through documents, whilst the large ball ensures maximum control and precision. Four programmable buttons enable personalisation as required. The detachable wrist rest provides comfort and the modern silver and black colour scheme ensures it looks great on your desk!

• Optical tracking for superior accuracy
• Award-winning Scroll Ring™ provides super smooth navigation
• Exceptional comfort for ultimate productivity
• Large ball for maximum precision and control
• Detachable wrist rest suitable for left and right handed users
• Fully customisable buttons to personalise as you wish