There's always been those who'll use a trackball in preference to a mouse or trackpad. Other than aesthetics there's very good reasons for this, not least that employing different controllers is an effective way to reduce risk of Repetitive Stress Injury (RSI) when using your Mac.

Easy to use; extra features beyond other trackballs; nice looking; can help prevent RSI when used in conjunction with other controllers

Action is high for RSI sufferers; accuracy in use doesn't match that of graphics tablets

Like the Expert Mouse, the Kensington SlimBlade Trackball's based around a static base with a large weighted ball to roll under your fingers, moving the mouse cursor on screen. There are four clickable controls spaced around the Kensington SlimBlade Trackball's metallic grey frame, one in each...

The base of the SlimBlade Trackball is made of a granite-coloured plastic with four rubber feet on the bottom to prevent it from sliding around on your desktop. Unfortunately, the trackball draws its power and connectivity from USB 2.0.

Comfortable for those physically unable to use a standard mouse; Heads-up display conveniently shows the current mode

Toggling between three modes complicates work flow; Expensive; Lacks Bluetooth; Can't customise buttons or alter trackball sensitivity; Large footprint

Kensington resurrects a dying breed with the SlimBlade Trackball, but the potential of its unique shortcut buttons devolves into a mess of clumsy extra functions and awkward movements that restrict productivity.

Comfortable for those physically unable to use a standard mouse; Heads-up display conveniently shows the current mode

Toggling between three modes complicates work flow; Expensive; Lacks Bluetooth; Can't customise buttons or alter trackball sensitivity; Large footprint

I love this slim mouse! I'm having problems with my index finger so my employer wanted me to get this mouse to save the 'scroll finger.' I do however miss the scroll wheel from the other Kensington mouse. I find scrolling with the whole ball not as convenient as they make it sound.

Amazing design... most comfortable mouse I have ever used. Very accurate (although not as much as the expert mouse). Don't like how hard you have to press the buttons at times... not as ideal as expert mouse for gaming (if you like trackballs to game) due to button location.

design; comfort

buttons

The Slimblade Trackball is a very nice device. I have been using Kensington Trackballs for years because I like that it sits in one place and your fingers intuitively can move a cursor around the screen without moving your hand like with a typical mouse.

Accurate Tracking; Comfortable Design; Fast Response; Glides Smoothly; Innovative Design; Works On Any Surface

Not Configurable

Very streamlined and easy to use. I've been waiting for Kensingtin to upgrade their trackball.

build quality; compatibility; design; easy to install; easy to use; features; performs well; size; value for money

Love this mouse. Extremely accurate pointer which is essentially when playing with inches. Programmable buttons allow for quick shortcuts whether it's a command or even lock your computer quickly.

The Slimblade is the best alternative to a mouse, period. Anyone who's used a trackball knows the basic advantages: no need for a pad or clear space on your desk and no hitting the edge and having to pick up a mouse to set it back in place.