My experience: great for Mac OS X and Windows XP -- even the preferences pane works great under OS X!
Bought one for my wife's Windows XP (SP3) laptop. Liked it so much I bought one for my iMac running Snow Lepoard (OS X 10.6.2). Downloaded Logitech Control Center (LCC) 3.2 for my iMac, and the software has worked wonderfully. I can reassign functions and keystrokes to all six buttons plus the left and right "scroll buttons" of the wheel. (So I consider it really an eight-button mouse.)
See below for the functions that can be assigned. Button assignments can be for a specific application, or "global" (for all applications that don't have specific assignments).
Here's one tricky thing to know: when selecting the application for special button assignments, select either the .app file itself or its alias (symbolic link), depending upon how you plan to launch the app! If you select the .app from /Applications while assigning button functions, and then launch the app via a symbolic link, your button assignments will not be in effect. Simple to fix by going back to assign and selecting the symbolic link instead.
A perfect fit for my medium-sized hand and my holding style. The tracking is great, it feels like a substantial, quality unit, and best of all uses a standard battery size. Use rechargable AAs or alkaline AAs. The latter lasted over 9 months (I think actually it's been a year) before they needed replacing, and we don't usually turn the mouse off when we're done with it! I like the scroll wheel set to "free-spin" mode the best. With the wheel in the "click, click" mode, the clicks seem a little coarser than I would normally like.
I've got the USB receiver plugged into my keyboard so I can't supply any good range information right now.
"Functions" that can be assigned to any key (under Mac OS X) include:
- nothing
- click (single, double, triple, right, and middle clicks)
- advanced click (single, double, and triple clicks, and click lock, all with key modifiers)
- cruise
- horizontal scroll
- keystroke (apparently any keystroke, with any combination of ctrl, alt, command and shift modifiers)
- modifiers (configure a button to generate ctrl, alt, command or shift)
- open: application, document, folder or web page (URL)
- back
- forward
- cover flow
- display control
- eject CD
- end session
- expose, dashboard, and spaces
- one-touch search (spotlight, finder, google, yahoo, or custom URL)
- quick look
- screen capture
- sound control
- switch application
- zoom (even for buttons)
Average Rating:

Brand: Logitech
Color: Gray/Black
Model: 910-000240
Product Description:
The Logitech MX 620 lets you fly through long documents at hyper speed with the nearly frictionless alloy scroll wheel. Shift to precise click-to-click scrolling when you want to navigate lists, slides and image collections. Laser tracking delivers smoother, more responsive cursor control than standard optical mice. 2.4 GHz digital technology provides an uninterrupted cordless connection. You won't be caught out by flat batteries with 1-year battery life and an indicator light to warn you when power is low. Advanced one-touch search button instantly displays results from search engine and forward/back buttons speed up web browsing.
Features:
- Revolutionary hyper-fast scroll wheel
- Laser precision
- Cordless Freedom
- Extended battery life
- Advanced search and navigation
Format: CD
Available at Amazon
List Price: USD 59.99
Lowest Used Price: USD 41.97
Lowest New Price: USD 45.95

Customer Reviews

Comfortable and reliable
Scroll wheel does not really make you fly within a page. Need to adjust your settings. Buttons are very soft and responsive. Good mouse.

Decent Mouse
Okay, it's a mouse and it does what mice do. Point & click. Ba da bing.
I wasn't sure about how I might like the free-spooling wheel (which you can set to traditional mode if you don't like that), but have decided I like it. You're thinking how you might use it to scroll down long pages, but it turns out that the fast spinning is most often used scrolling back to the top of pages for me. I might read my way down a long page and then spin the wheel and zip back to the top to reach the navigation.
I have seen intermittent issues (not that often) when it's less responsive than it should be, but I can't tell if the interference might be a cordless phone, the wifi, the fact that its receiver is behind my desk or what.
On ergonometrics, I replaced a Microsoft Intellimouse Explorer 2 (whose wheel got ultra stiff making it unusable) with this new Logitech mouse, which is more narrow. I wish it were wider for my hands.

Comfortable Easy to Use Wireless Mouse
Logitech makes some great mice, and this is no exception. Plug it in and it works. Fits my hand well (typical size male hands). Buttons have a solid feel. You can turn the "clicks" in the scroll wheel on and off, which is a nice option depending on what you're scrolling. I'll be interested to see how long the batteries last.