Simply excellent for the money it costs. I found this maybe helpful https://youtu.be/2M6Xcu1FZrc

At a price that a peripheral should be as a consumable (that's why it's called that), it was immediately recognized, works flawlessly, has DPI selection with the press of a button, 2 side buttons, and a central scroll wheel that has the right feel and function, unlike the "branded" wired one that it was supposed to replace in my case, which had double the price.
Oh, it also includes the battery!! (1 x AA)
The size is slightly larger than the equivalent ones from well-known companies that launch them for Laptops and clearly smaller than the Desktop types. It is recommended more for young girls and children and less for big hands and sturdy arms.
And to be specific, I will provide the dimensions as stated on the box: 105 x 66 x 39 mm.

I haven't had it for long, but so far it does its job just fine. Comfortable and functional, it will show if it's durable too.

Although I didn't have any issues using it (I used it every day during normal hours, not all day), the battery would constantly run out and I had to keep buying new ones all the time. The battery lasted the most for 3 weeks, generally I had to replace them every 2 weeks... Waste of money, I have another one at the office that we use much more (double the hours) and it needs to be changed every few months.

I bought it as a backup following the good reviews I read here - it seems excellent in relation to its price!

The worst thing I have ever bought. I buy one, it starts leaking on me within a week. The cursor doesn't align where I want to click, it moves on its own, doesn't double-click, after the first click it moves on its own and loses it. Okay, I say, it would be defective.
I didn't keep the receipt, the merchant decided not to serve me so he wouldn't lose 6 whole euros (bonus scolding for my huge mistake of not keeping the receipt, it wasn't the damn mouse's fault, it was my fault for not keeping the receipt) so I bought another one from another store.
In exactly 5 days, the same issues, I got fed up and kept the receipt, tomorrow I will return it and get something else. Stay away if you want to maintain your mental health.

The mouse is the best and most convenient thing I have ever held in my hands. The buttons are not too noisy, it is lightweight but not annoying. The DPI button located right above is very useful, as it determines each person's needs. I personally prefer the medium level (1200). The two side buttons are also something new for me, they change web pages without you having to go back and forward! I didn't have something like this before. Smart and convenient! I don't have an opinion on the build quality yet, I'm just giving an early review because I was impressed by its comfort and usefulness. If anything changes in terms of quality, I will come back...

A value for money mouse... and I can say even more... it's worth its money and more!!!

MACRAN is the best mouse I have ever bought. It has an on/off switch but also an option to leave it open, so it turns off by itself and turns back on with a click. For only 6.90, it's simply the best. I have saved a lot of batteries that my Microsoft mouse was consuming. We have been using it all day, every day at the store for three months now and I haven't had to change the battery