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Product Specifications
General
BrandKensington
Item Height
6.3 centimetres
Item Width14.6 centimetres
Hard Drive
Hard Drive InterfaceUSB
Technical Details
- Battery-free Mouse: No
- Bluetooth: No
- Built-in Storage Capability: No
- Charging Unit Included: No
- Connection Type: Cable
- Force / Vibrate Feedback: No
- Force Feedback: No
- Graphic Tablet with Mouse: Not Applicable
- Graphic Tablet with Pen: Not Applicable
- Input Registration: Optical LED
- Notebook Mouse: No
- Number of Buttons: 4
- PS2 Interface: Yes
- Platform: PC / Mac
- Read / Write Functionality: No
- Scrolling Function: No
- Scrolling Type: Not Applicable
- Scrolling Wheel: No
- Serial Interface: No
- Type: Trackball
- Type of Connection: Cable
- USB: Yes
- USB Hub: No
Product details
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Product Description
Manufacturer's Description
Designed for PCs and Macs, the Expert Optical Trackball employs Kensington's DiamondEye optical technology for smooth, precise cursor movement. Surrounding the ball, is a Scroll Ring that puts scrolling right at your fingertips. Expert Optical Trackball even comes with a soft wrist rest-right.
Product Description
Kensington Expert Mouse Trackball optical wired PS2 USB 64325 Mice Mouse
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Customer Reviews
Most Helpful Customer Reviews
9 of 9 people found the following review helpful
Amazon Verified Purchase
Recently I have changed from a mouse to a trackball to relieve RSI. This is the beast I chose. It does look a bit of a beast, but it is so comfortable to use, and the wrist support included is a real innovation compared to others.
I used to use a thumbwheel a few years ago but I find the "Expert" far more comfortable.
It is comfortable to use, and allows great pointer control and options.
Features and flexibility are great also. Scroll ring is great idea, but I agree (with a previous reviewer) a little cheap and tacky in feel - but what the hell - it works fine!
Areas I would suggest could be improved?
- make it wireless
(there used to be a wireless version I think, but discontinued).
I have one of these at work and was carrying to and from home to use in evenings - I am now buying a second one to keep at home.
After 2 weeks I already feel a difference in my RSI - almost gone!!
Even if you do not have RSI, this is a great alternative to a mouse.
I used to use a thumbwheel a few years ago but I find the "Expert" far more comfortable.
It is comfortable to use, and allows great pointer control and options.
Features and flexibility are great also. Scroll ring is great idea, but I agree (with a previous reviewer) a little cheap and tacky in feel - but what the hell - it works fine!
Areas I would suggest could be improved?
- make it wireless
(there used to be a wireless version I think, but discontinued).
I have one of these at work and was carrying to and from home to use in evenings - I am now buying a second one to keep at home.
After 2 weeks I already feel a difference in my RSI - almost gone!!
Even if you do not have RSI, this is a great alternative to a mouse.
6 of 6 people found the following review helpful
Bought one for work becuase I was getting RSI from using scroll wheel on mouse. This is great. Up to 6 buttons configurable, central ring acts as scroll wheel, ball pops out for easy cleaning, ball feels good and comfortable and makes excellent executive toy during long telecons. Within 2 week all symptoms gone.
BUT - finish is poor, very difficult to fit the supplied wrist rest (took all of my not inconsiderable mass to force fit it). And very very pricy. Looked at other solutions, but for me ths was the most comfortable.
BUT - finish is poor, very difficult to fit the supplied wrist rest (took all of my not inconsiderable mass to force fit it). And very very pricy. Looked at other solutions, but for me ths was the most comfortable.
23 of 25 people found the following review helpful
After having used the left/right-handed Logitech Marble Mouse pretty
happily for six years why has this monster just become my new best friend?
The snooker sized ball is massive and comfortable. It sits very well right next to the keyboard, the wrist rest encourages a very natural and ergonomic sitting position.
The Logitech's design always had me wanting to be able to incline it sideways off the desk at an angle. Most of Logitech's right-handed-only models do cradle the hand at a slight angle. The ambidextrous model however doesn't. Presumably this is so they can flog more of these units to both left and right handers rather than simply make just ONE of their products for lefties, ok, rant over.
The Kensington's large ball allows you to alter the angle at which your hand sits, as a far larger area of your fingers makes contact with the ball.
A lot of other reviewers of this product on other sites say a great deal about the hardware so there's no point re-hashing that here other than to agree it does feel a bit on the cheap and plasticy side, but that said personally, I'd much rather something that's well made and works well than something that just looks good.
The hardware is however only part of the story. It's the software that comes bundled with this that really makes the difference. You can easily program each of the 4 buttons and assign functions both the top two buttons and the bottom two buttons being pressed simultaneously too which effectively increases the number of buttons to six. The functions you can ascribe these buttons is extremely impressive, things I'd never have thought of as mouse functions. One click can bring up a really nifty `alt-tab' alternative. You can program any button to emulate any keyboard presses, so anything from entering a string of text to say Windows-D-ing or Windows-E-ing.
You can even create your own right click menus. The mouse buttons can also be told to function differently within different programs.
I've only just started using this but I knew in an instant that this is a really nice bit of kit.
happily for six years why has this monster just become my new best friend?
The snooker sized ball is massive and comfortable. It sits very well right next to the keyboard, the wrist rest encourages a very natural and ergonomic sitting position.
The Logitech's design always had me wanting to be able to incline it sideways off the desk at an angle. Most of Logitech's right-handed-only models do cradle the hand at a slight angle. The ambidextrous model however doesn't. Presumably this is so they can flog more of these units to both left and right handers rather than simply make just ONE of their products for lefties, ok, rant over.
The Kensington's large ball allows you to alter the angle at which your hand sits, as a far larger area of your fingers makes contact with the ball.
A lot of other reviewers of this product on other sites say a great deal about the hardware so there's no point re-hashing that here other than to agree it does feel a bit on the cheap and plasticy side, but that said personally, I'd much rather something that's well made and works well than something that just looks good.
The hardware is however only part of the story. It's the software that comes bundled with this that really makes the difference. You can easily program each of the 4 buttons and assign functions both the top two buttons and the bottom two buttons being pressed simultaneously too which effectively increases the number of buttons to six. The functions you can ascribe these buttons is extremely impressive, things I'd never have thought of as mouse functions. One click can bring up a really nifty `alt-tab' alternative. You can program any button to emulate any keyboard presses, so anything from entering a string of text to say Windows-D-ing or Windows-E-ing.
You can even create your own right click menus. The mouse buttons can also be told to function differently within different programs.
I've only just started using this but I knew in an instant that this is a really nice bit of kit.
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Most Recent Customer Reviews
Not for me, unfortunately
After reading the other 'rave reviews' I thought that I would give this a try - after all I have used a Logitec 'thumb-style' trackball for years quite happily and thought this... Read more
Published 23 days ago by Mr. James Joseph Ollerhead
Poor quality trackball
Very poor built quality. Even the item's legs aren't on one surface and had to pad one of them.
Tracking isn't smooth, especially the scroller ring.
Tracking isn't smooth, especially the scroller ring.
Published 1 month ago by MAPBuH
Best Trackball
It's the best trackball on the market, it's not so expensive and the scroll ring and the multifunctional buttons (6 different functions at all) make it the perfet gear for all... Read more
Published 2 months ago by TheGoggo
Kensington Expert Mouse
This is my newest purchase of a trackball. Slightly different design to what I've been used to. I used a Logitech Mouseman Wireless trackball before now which uses a much smaller... Read more
Published 4 months ago by Andy
Good idea, poor implementation
I don't get RSI. I just wanted a change, so when I saw this at a bargain price (on a certain auction site) I had a punt. Read more
Published 6 months ago by herrbbiiee
Not that comfortable,for me.
I am really struggling to find a mouse/trackball that suits my hand size, I have very large hands and long fingers. Read more
Published 7 months ago by Andre M. Ray
Control at your finger tips
The older trackballs I used to use where thumb based, biggest problem was the ball never seemed to roll easily causing issues when trying to use for intricate designs. Read more
Published 12 months ago by s j davies
Excellent mouse - a word about click delay from chording
I've been using this mouse for about 5 years now and it's still in great condition and going strong. Read more
Published 13 months ago by D. Stigwood
3 years in and still loving it
Hi All,
Just wanted to say that I bought this to relieve RSI like many others and can safely say it's saved my career in IT. Read more
Just wanted to say that I bought this to relieve RSI like many others and can safely say it's saved my career in IT. Read more
Published 18 months ago by Ally0000
Not ideal
Just too large and uncomfortable for my liking - much prefer the cheaper trackball (mfgr id 5028252073936)Kensington Orbit Optical Trackball
Published 18 months ago by Bhasker Pandya
Listmania!
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