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Question: Is this a laser or optical mouse?  How does it work without a mousepad - especially smooth surfaces?  Thank you.
Document: This is a fine mouse that connected without problem. The bottom cover for the battery seems a little flimsy, especially for the price and because of that price ($80ish USD), I would be mad if it broke, but we never had a problem with it in a shared conference room.The cool factor for this mouse is the smooth-scrolling scroll wheel. It flies. On one good spin I got down 70,000 rows in Excel.
It's not compact to the degree of the Microsoft Wedge or some other touch mice, but it'll fit nicely in a pocket.The best feature of this mouse is the wheel, which is very smooth and can be nudged left and right to side-scroll. Tracking is very responsive in general and works on many surfaces, though overall I'd still say this is a desktop mouse. The buttons work fine, aren't obnoxiously loud, and have separate L/R physical buttons (unlike a lot of other BT designs).
I like mice that work. Do you like mice that work? If you do, buy something else. This mouse does not work. It lasted less than an hour before the laser died. Shows connected in devices, has good batteries, just doesn't do anything. It would make a nice paper weight, but I use computers and I do not need a computer weight.
It does *not* work on clear glass, but to be fair, the manufacturer does not claim that it would.It's too early to talk about reliability yet, but so far I'm quite pleased with this mouse. I do advise, if you buy one, to take the time to download the optional drivers from their website. The mouse works fine without the drivers, but you'll find it much more versatile after they are installed.This one's a keeper.
It has the standard on/off switch and bluetooth connect button, and pairs easily.I had a Logitech V470 cordless laser mouse which at the time purchased was cheaper than this one (isn't anymore though, not sure why). The M555b is a lot better in general, having a more flexible scroll wheel and the extra configurable button. It also tracks much better.
On my MacBook this works fine right next to the computer. On my Mac mini desktop setup, though, it's about 4 feet from the computer and it goes a little spastic and unpredictable, especially with a slow Internet connection (1.5Mbps) filling out online forms. I'll use it for the MacBook but relay on my USB wireless mouse for the desktop.
I bought this without realizing it is for the Mac, but it paired easily with my Asus Zenbook and works very well.Very happy with this purchase!
Seems you have to have the acceleration on for this to even work.. which makes me think their software is a piece of crap. This same behavior happens when the scroll is in click or in free spin mode. Also i, don't like how the click mode feels in the mouse wheel..  feels very loose and clunky.I've experienced this exact same erratic scrolling on the M317 on the Mac. Seems the scroll works fine on Windows.
I work as a field engineer and programmer in industrial environments with a laptop, but always have the tablet with me for personal use. I think this mouse will survive if steps are taken to protect it from being dropped. I am using the standard WIN drivers BTW. I just turned the mouse on and started using it. I don't have need for additional features that the Logitech drivers would provide.
Here's the even cooler factor: you can switch between the smooth scroll and regular, incremental mouse wheel scrolling-- the kind that clicks as you use it. To switch between them, click the scroll wheel extra hard and it does a solid-feeling click and then switches to the other kind of scrolling.
Answer: This mouse is laser tracking, it may need a mousepad if the surface is too much mixed jump colors.