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Kensington > 
Item#: N82E16826125017

Kensington K64325 Expert Trackball Mouse

  • DiamondEye Optical tracking for superior accuracy
  • Award-winning Scroll Ring for precise fingertip scrolling
  • Exceptional comfort for ultimate productivity

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
  • newegg DiamondEye Technology The Kensington 64325 features the DiamondEye Optical tracking technology to provide superior accuracy.
  • newegg Scroll Ring Design The Kensington 64325 comes equipped with the award-winning Scroll Ring design to ensure precise fingertip scrolling.
  • newegg Large Scrolling Ball The Kensington 64325 features a large scrolling ball to provide convenient control with maximum precision.
  • newegg Detachable Wrist Rest The Kensington 64325 boasting a detachable wrist rest to cradle your hand in comfort for cozy long-period typing.

Learn more about Expert

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of Expert

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  • Kristi J.
  • 6/24/2015 7:27:55 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStill the only trackball worth owning.

Pros: Precise in a way that no normal mouse ever can be. Smooth and precise scroll wheel. Very high quality, I have been using the same trackball since 2010.
Much less stress on your hand than a normal mouse.

Cons: Requires frequent cleaning, it even needs to be taken apart from time to time to keep it clean.

Other Thoughts: I have been using Kensington Expert trackballs since 1991 and as long as they keep making them, I will keep buying them.

1 out of 1 people found this review helpful. Did you? Yes No

  • Henry S.
  • 6/20/2015 7:05:23 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsa wonderful, if not chunky mouse

Pros: I used the basic orbit for the past many years, and only ordered this because the buttons finally wore out, using this is a blast compared to it with the added four buttons being remarkably handy and the scroll ring allowing me to play the games I couldn't previously due to the orbit grey's lack of third mouse button and scroll ring. it's simple plug and play without any need to download the "trackball works" software, which is convinient, and it's design is surprisingly manageable after some practice.

Cons: I found it awkward using at first due to it's design choice, and after reading a review stating the cushion it comes with for the wrist was rather bad I see why now, it attatches with two pegs that hook beneath the mouse, the pad isn't quite properly molded and leaves a weird gap, deciding to take it off after noting this weird gap I found it was a struggle to budge it, and in doing so bent the prongs out of shape nearly garunteeing it won't fit again. the scroll ring does feel a tad gritty like some of the parts keep catching, but it's only during large rotations that it's really noted. and aside from that the buttons can be kind of stiff, requiring some pressure to activate, but I assume most of that will wear out given time.

Other Thoughts: Overall for the 60 ish bucks I spent on it, I say it's a pretty decent mouse, it's ready straight out of the box, it does all it needs to, and works perfectly with the programs I've needed it for, so overall despite some quirks I'm content with my purchase and suggest considering the mouse, or trying one before knocking it.

1 out of 1 people found this review helpful. Did you? Yes No

  • Marilyn B.
  • 4/30/2015 7:38:12 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsExcellent item.

Pros: Bought in December 2007 and it still works well.

Cons: The scroll wheel movement always felt a little gritty; I just got used to it.

Other Thoughts: I use a gel pad with integrated wrist rest; it's more comfortable than what comes with.

1 out of 1 people found this review helpful. Did you? Yes No

  • Michael G.
  • 2/18/2015 9:53:22 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsThe Best

Pros: I've been using one of these for over ten years - yes, the same one! They are built like a tank, and once you get used to one, you will NEVER use a mouse again. This is simply the best pointing device ever made, period.

Cons: Expensive - but you get what you pay for.

3 out of 3 people found this review helpful. Did you? Yes No

  • mikhail g.
  • 10/8/2014 1:47:13 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

2 out of 5 eggsUnwieldy big. I don't know why I didn't expect that

Pros: -Symmetrical trackball WITH A SCROLL WHEEL! Logitech, please take note.
-Firmware that allows for simultaneous clicking to add further functionality, ala middle click and 6th click. The firmware is good enough give you lots of options here.
-Could probably kill someone with it if I needed to defend myself against an intruder.

Cons: -Massive. I have small hands, and I could not find a comfortable way to rest my hand on this mouse to be able to reach all four buttons.
-The button layout, and I had a feeling this would be the case, is not economical what so ever. It simply was not designed for the top buttons to be reachable with the hand in a resting position.
-The buttons are too heavy to click, and especially to hold.
-The wristpad is laughably bad. Too firm, never tested for actual use and as such misshaped. The plastic thing that was suppose to connect the wristpad to the mouse is one-time use, and promptly broke to pieces upon trying to take the wrist pad off.

Other Thoughts: No, ergonomics was not a goal set in mind when Kensington made this mouse. I'm not sure what goals they actually set because it's almost unwieldy. I'm coming to the Expect Mouse from Logitech's Trackman Marble, which is far from ideal itself, but it has ergonomics on its side, and moving from that to this is not pleasant. With the included wristpad my hand rested heavily on an uncomfortable part of my wrist. With a third party bead wrist pad I'm in the same boat as any normal mouse except my fingers are stretched out everywhere in order to reach the buttons, and that starts to wear down on you. I was hoping to rest my palm on the mouse (the way I do on the Logitech Trackman) but that was no the case here, and that's the biggest issue I have with this mouse.

4 out of 6 people found this review helpful. Did you? Yes No

  • Patrick C.
  • 12/31/2013 8:46:11 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month

4 out of 5 eggsAwsome Trackball

Pros: Very good quality, works well, solved my carpal tunnel syndrome.

Cons: Gets dirty quickly, have to clean it often.
Expensive for wired USB.
Would have expected wireless for that price

3 out of 3 people found this review helpful. Did you? Yes No

  • margaret p.
  • 12/3/2013 11:53:30 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsdon't buy it

Pros: reduces carpal tunnel issues, because it's stationary

Cons: trackball is not secure, can fall out and roll anywhere. scrolling has a gritty feel to it, not what you expect from a high priced mouse. the worst problem for me is the top 2 buttons have to be programmed, but they will stop working. also, you cant use a top button with a bottom button. you have to use either the top 2 or the bottom 2. the scrolling worked briefly, then failed in the program i use. the clicking often fails me, i have to double or triple click to get it to register.

Other Thoughts: no drivers included, you have to download it and run the program in background. the ergonomics are bad for me, i have to use my index finger to roll the mouse. very imprecise for what i do.

2 out of 4 people found this review helpful. Did you? Yes No

  • Robert E.
  • 9/6/2013 8:02:23 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsIt's a programmable track ball that works

Pros: I've been using this brand of trackballs for 10 yrs and this one is the best. I own 4 of this model and use them daily. I do not lay my palm over the ball I just lay the three middle fingers over the ball and only use upper buttons for special purposes. It seems some are trying to access all buttons from one position of the hand. 7 possible functions are available beyond the mouse movement itself. 4 buttons, 2 chording commands and the scroll ring, which is directional as to your preference. I had to use other software - freeware- until Kensington came out with the new software, and it works great with 64bit Vista and Win7, I haven't tried 8 so can't comment. This model is much improved over the last

Cons: 2 cons on these. 1 - is the scroll ring quit working on my oldest unit. 2 - scroll ring is a little on the inconsistent side as far as firmness and feel - between the 4 units I have, as in smoothness comparing one to the other. And I do feel the first unit I had was the worst scroll ring feel out of the box, and the newest, was the best feel. So maybe they got the problem corrected. In all honesty, the scroll ring that failed was very old before it just recently failed. But all other functions still work.

2 out of 2 people found this review helpful. Did you? Yes No

  • Mark H.
  • 8/20/2013 7:45:12 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsbest trackball I have had

Pros: This is the largest smoothest trackball i could find at the time. I have had it about 4 years. The large size makes it much easier to make precision movements. I will admit I really don't like mice, they run all over the table just like the kind you have to feed.
The only bigger one I know of is designed for people with limited mobility, not for precision.
I will admit there are some places where a mouse or tablet is better, Photoshop for example. I have used a tablet with stylus for that.

Cons: I do have to clean it every few months. Lifting out the ball and blowing dust out of the bowl keeps it working.

Other Thoughts: I have never used the supplied software, it is being used as a two button device plus the ring. I switch between so many different applications that I never found a universal use for the extra buttons.

Did you find this review helpful? Yes No

  • Mark D.
  • 7/16/2013 8:57:47 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsThe only thing I use

Pros: The ease of use. I've never had a problem with any of my computers seeing it.

I love the fact that I'm not having to always pick up an reposition it like you do with a mouse.

Cons: If you have never used a track ball before it does take getting use to. (about a week) but once you do you will never go back.

Don't use a track ball with those tiny balls..they are a pain.

Did you find this review helpful? Yes No

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Item#: N82E16826125017
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