It shows a good mouse with a nice design, comfortable in the hand, ideal size for use with a laptop.
Okay, for its price.
The only thing that "scares" me is the thin rubber band it has on the silver scroll wheel for scrolling..
Let's see its durability..
Also..
The alkaline battery it had inside was consumed within 1 month..
Even though it turns off by itself (standby) when not in use. It wakes up with a button press, not with movement or shaking. That's probably good.
Anyway, I use it quite a bit, I can't complain.
Now I've put a regular (non-alkaline) battery to see its duration, it will obviously be shorter, but let's see..
Then I'll try a good alkaline battery and depending on the results, maybe switch to a rechargeable one.
When the battery is low (~0.9v), the pointer freezes, it doesn't work, but the little LED at the bottom keeps blinking.. It starts again with the on/off switch at the bottom and stops again after a while..
The mouse (not the USB receiver) writes on the bottom: 1.5v <25mA.
Just for information, these are the latest details.
* I will come back.. At some point.. Depending on the battery's mood..
* Oh, one more thing I noticed is that the more mah a battery has and therefore the bulkier it is, the harder it is to open the sliding battery cover.. And with the regular (non-alkaline) one, it doesn't fit well.. It opens much easier, without causing any issues with the last regular battery..

Update1: Rechargeable ~1700mah lasted a month.. With a 2300-2500 one, I believe it would last a month and a bit more..
For longer duration, maybe a lithium AA would be good, but with the prices they have, it's just not worth it.. You can get a pack of plenty alkaline batteries for the same price and you're good..
So, this scenario with alkaline batteries might work OR the rechargeable one, we'll see..

Update2: Regular (non-alkaline).. Currently being tested..
If I had to guess, I don't expect it to last more than 10 days..
*Update on this.. Not even half a day with the regular one.. Not recommended for regular batteries..

In the past, I had tried another wireless mouse from Microsoft, I think it took 2 AA batteries as it was for desktop use, very good for its time, but the materials weren't that great in the long run.. Although I'm not sure if I abandoned it because it was wireless with batteries.. Probably not, as I mostly work on a laptop.. But the truth is, I had gotten quite used to a mouse with a cable, it didn't bother me much.. But I happened to try a wireless one again, this one for review, which I liked quite a bit, but having another thing to worry about the battery... It feels a bit inconvenient to me.. We'll see..