I have it for about 4 years. The watch (NOT the strap) withstands wear and tear, diving with a spear gun up to 15 meters, its original battery lasts until today, it is lightweight and comfortable, but it has small dimensions, which makes it look like a children's watch. The serious negatives in my opinion are a) the fact that its screen is not easily distinguishable even during the day. Unacceptable for a watch. In order to see the time, you have to hold it vertically and not have too much lighting (we are not talking about cases when there is sunlight because then you can't see anything), b) its illumination at night is insufficient and has a short duration, and c) its strap (which is not durable and has already broken twice because it polymerizes and starts to disintegrate) is very expensive compared to its price (20 euros), so I gave up on it because I consider it a mockery from the company. Also, the thermometer is completely unreliable when wearing it and the compass malfunctions because it constantly needs adjustment and is relatively unreliable.

Although I have been wearing it for only 2 days, the first impressions are very positive. Its screen is clear, it is comfortable to hold, and it looks nice. The main screen that displays the time also shows the date in the format 7-25 WED. The compass works correctly after calibrating it. I don't know if it shows the temperature correctly because I don't have a comparison with another thermometer. However, today at 17:00, on July 25th, it showed me 27 degrees Celsius in the shade while wearing it on my hand. I don't know if it needs any adjustments because I haven't looked into it yet. It has a 24-hour countdown and a stopwatch and alarm clock. It also has a world clock for various cities around the world and a button for a backlight that stays on for 2 seconds. The user instructions are in English and detailed. It is waterproof up to 100 meters, so it is suitable for swimming in the sea as long as you rinse it with fresh water afterwards, not that anything will happen, but to prevent salt residue and visible marks. Finally, when completing an hour, for example, at 17:00, 18:00, 22:00, etc., it makes a beep-beep sound (double). I don't know if the sound can be turned off.

I will provide an update once some time has passed, I promise.

***14/08/2018***
Everything I mentioned above still holds true. It has 5 alarms and excellent water resistance. It didn't have any issues with dives and swimming in the sea. The only thing I would like is for the backlight to stay on a little longer, about 5 seconds. The compass needed recalibration after a few days. Overall, it is an excellent watch, especially considering its price.

***27/01/2019***
The watch is flawless. It hasn't had any issues whatsoever. The only downside is that the compass needs calibration every few days, but it doesn't bother me. Anyway, for the 72 euros I paid, I am more than satisfied. If I had bought it for 300 euros, then I would complain about the compass. The main use I have for it (besides checking the time) is the stopwatch for running.
For those involved in mountaineering, hiking, or similar sports and want a reliable barometer and compass, this watch won't be suitable, and you will need to go for more expensive models. For those who want it as a stopwatch, alarm clock, and to wear it daily anywhere, then get it with your eyes closed.

***29/07/2020***
The watch is like new. Tested in a construction site with digging, it endured the dust and mud of its life. Tough. Perhaps one of the best purchases I have made.