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Kensington Expert Trackball Mouse (K64325)

4.1 out of 5 stars 1,607 customer reviews
| 85 answered questions

Price: $74.55 & FREE Shipping. Details
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
Wired
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  • Large ball Trackball Mouse with Scroll Ring for comfort and precision
  • Customizable 4-Button design via TrackballWorks software
  • Compatible with Windows (including Windows 8) and Mac OS Computers
148 new from $74.55 3 used from $59.00 1 refurbished from $232.97

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$74.55 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Kensington Expert Trackball Mouse (K64325)
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  • Apple Wired Keyboard with Numeric Keypad Compatible with Mac OS X v.10.6.8 & later Versions (MB110LL/B)
Total price: $123.55
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Compare to Similar Items


This item: Kensington Expert Trackball Mouse (K64325)
Customer Rating 4 out of 5 stars (1607) 4 out of 5 stars (1172) 4 out of 5 stars (457) 4 out of 5 stars (2752)
Price $74.55 $29.95 $86.99 $22.79
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Priority Sales Inc
Hardware Interface usb2.0 usb usb2.0 usb2.0
Sensor Technology Optical Trackball Trackball Trackball
Color Black Black Black Red/Silver
Battery Description Information not provided Information not provided Information not provided Information not provided
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Product Description

Style: Wired

Kensington Expert Mouse Trackball - USB w/PS2 Adapter

Product Information

Style:Wired

Technical Details

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Summary : Screen Size, Screen Resolution, Graphics Coprocessor, Graphics Card RAM
Wireless Type 2.4 GHz Radio Frequency, 802.11abg
Number of USB 2.0 Ports 1
Brand Name Kensington
Item model number 4 Buttons
Hardware Platform Pc
Operating System Windows
Item Weight 1.1 pounds
Product Dimensions 3.5 x 9.8 x 9.8 inches
Item Dimensions L x W x H 3.5 x 9.75 x 9.75 inches
Color Black

Technical Specification

Additional Information

ASIN B00009KH63
Customer Reviews
4.1 out of 5 stars 1,607 customer reviews

4.1 out of 5 stars
Best Sellers Rank #3 in Electronics > Accessories & Supplies > Computer Accessories > Input Devices > Trackballs
#114 in Electronics > Accessories & Supplies > Computer Accessories > Keyboards, Mice & Accessories > Mice
Shipping Weight 1.4 pounds (View shipping rates and policies)
Date First Available July 7, 2004

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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From the Manufacturer


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style Name: Wired Verified Purchase
Almost every day I work for hours using a Computer Aided Design program, and over the years have found the Kensington Expert Trackball to be an indispensible labor (and arm) saving device. You get so much with so little movement! I was looking to buy a new one.
I had misgivings about this product after reading some "Worse than Bad" reviews that were in this forum. Still, either because hope springs eternal or a fool and his money are soon parted, I went ahead and ordered one.
Out of the box ball rotation was _The Worst_ as others had said. I had deadlines, however, so decided to use it to see if anything would improve. Two hours later it had "broken in".
Trackball Wizards, my number five is on the trophy shelf. The Seven is AAMMAAZZIINNGG. Totally silent movement; virtually frictionless rotation; excellent functionality, and it has GOT to have one of the most eloquent designs of any input device on the market.
As an added bonus the scroll ring beats any scroll wheel I have used, anywhere.
Congratulations to Kensington for creating a truly superior product.
12 Comments 277 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: Wired
This is a superior alternative to the silver and blue USB model by Kensington with the awkwardly placed scrollwheel. Kensington brings back their award-winning classic design, adds a scroll wheel around the ball (programmable for lefties or righties!), a free attachable wristpad and all using optics - no more skin, hair and potato chip crumbs getting stuck in scroll wheels... it's all done using light.
My less than perfect rating is for the less-than-fluid turning of the scroll wheel. It sometimes feels like you're grinding coffee when you're turning it. Sometimes it's smooth like butter, other times, it seems to skip a little... and it's not due to debris, since it's been like this since I got it out of the box.
This is something Kensington needs to iron out in their next model.
Despite this one flaw, this is simply the best their is and there's a good reason why this mouse flies off the shelves at nearly 100 bucks a pop - it's because it's the best input device alternative to a mouse - ever - anywhere.
Do your wrist a favor and treat yourself to navigating in joy.
4 Comments 112 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: Wired Verified Purchase
I got this trackball because of wrist pains in my mouse hand. I will give my complete unbiased review here.

First, it is very pretty. The buttons are nice looking and easily clicked. The ball is a nice size.

The trackball comes with a wrist rest, however it is not comfortable if you use your fingertips to move the ball. In fact, the Kensington documentation states that your hand should "hover" when using your fingertips to move the ball. The reason is, when you move the ball towards you, your fingers have to bend and your wrist bends upwards. In order to keep your wrist straight, you have to hover your palm over the wrist rest. So why did they include a wrist rest?

The only other configuration possible is to rest the blade of your hand, pinky side down, on the wrist rest and use your thumb to move the ball. This position feels good, however I found I am much less accurate with my thumb. Also if you have any thumb pain, this position is not feasible.

The scroll ring is a very nice feature. However, as everyone else has found, it sounds like it has sand in it when rotated. I took it apart and lubed it with a plastic safe grease. Even though I worked the grease into the mechanism, the plastic bearings still make the grinding sound while saturated in grease. I can't get to them to see if they can be replaced without breaking the plastic, which has been melted closed.

The ball is large and very pleasant to use. It was stiff out of the box though. The ball sits on three very tiny red balls, which act as bearings. Over a few hours of use, the grease from your fingers will lube the bears somewhat. You can also remove the ball and put a small dab of grease on these bearings, replace the ball and spin it, then remove the ball and clean it.
Read more ›
22 Comments 224 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: Wired Verified Purchase
As a longtime trackball user (with one of my favorites being an older model of the Kensington Expert mouse) I was very excited about this one. The features were outstanding, the trackball movement and precision flawless, and the scroll ring was very useful. However, the trackball housing itself is constructed on a very steep incline. Even with the wrist pad that's included, it put my fingers in a big strain to operate the ball (I have average sized hands). It's tilted up, so that you have to reach up and out to use the ball. This puts strain on the tendons of your whole hand, and also presses the nerve cluster at the base of your hand against the pad or table. After using it for about a week, my hand was in agony.

Earlier Kensington Expert Mice were almost flat, and were very comfortable. It's baffling to me why they made this change in the design.

Kensington did take this mouse back for a refund even though I had used it for a week (all I could stand). It may be that this unit is comfortable for someone with very large hands. I've gone back to my Logitech Marble Mouse, regretfully -- if not for the incline, the Kensington would have truly been the perfect trackball.
17 Comments 175 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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