The charger is generally practical, with a slim and easy-to-carry design, a non-slip base, and it doesn't look bad on a desk. However, it has some peculiarities - for me - which I mention and analyze below. WARNING: This specific package does NOT include the power adapter. There is another one on skroutz that comes with a power adapter and cable, but at a different price.
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DESCRIPTION:
- It includes 2 positions, one for a mobile phone or headphones (the lowered square section) and one with magnets for a watch or also headphones.

- It has a fan underneath that pushes air inside the charger, as well as from the grilles surrounding the lowered position to "cool" the mobile phone.

- Each position has its own indicator light that shows if it is charging (red), if the charging is complete (green), and in case of an error (flashing red).

- 15W fast charging, only for mobile phones that support it, and only if the power adapter (charging brick) is 15W or higher and compatible with the charger (I believe the original 25W Samsung charger is ideal).
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OBSERVATIONS:
- The noise from the fan is really negligible even during fast charging when it operates at maximum. I am surprised that many consider it annoying. The section for the mobile phone is intentionally lower to create distance between it and the charger and allow air circulation for better cooling.

- A faint high-frequency sound (whistling) may be heard coming from the charger during mobile phone charging (more pronounced during fast charging). When this happens, it simply requires better alignment of the phone. Move it slightly until it stops. [edit: In an excessively quiet environment, a periodic whistling sound may still be heard every second even without anything being charged. This is caused by the charger's repeated attempt to detect if a device has been placed. I doubt anyone will hear it, but in this case, simply unplug it when not in use]

- Although NOT recommended, SOME mobile phones can be charged in the watch position, but slowly. It worked for me with the iPhone 12 mini, but not with any Samsung. If you want to charge 2 mobile phones simultaneously, choose a different charger intended for that use.

- For some reason, even when the devices placed have completed their charging and the indicator lights are green, the devices remain slightly warm until they are removed (something like Ben Mari).

- If you charge the mobile phone with fast charging (15Watts) and place a second device to charge simultaneously (such as a smartwatch), the charging speed of the mobile phone will be slightly reduced.

- During the summer when temperatures are high and the mobile phone heats up from charging, sometimes the charging speed may decrease (I have found the comical solution of placing coolers on the charging devices - see photo).

- I have a Samsung Galaxy Watch 4, which is the reason I bought the dual charger. However, unlike its own charger, the watch reaches a noticeably higher temperature even though it charges in the same amount of time.

- It charges the mobile phone even in a case, as long as it is not more than 3mm thick, whether it is metallic or non-compatible. However, it is better to remove it because it increases the temperature more and may charge slightly slower.
Charging speed 0 - 100%
Galaxy S23 ultra
-fast wireless charging: about 1:50 hours
-fast wireless charging with 2nd device: about 2:10 hours
-slow wireless charging: about 4 hours
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Galaxy Note 9
-fast wireless charging: 2:40 hours
.
Galaxy watch
- about 2:10 hours
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WHY WIRELESS CHARGING:
+ In all my previous phones, the charging port was the first thing to break due to dust and particles from the workspace, so now I have put a USB-C cap on the port and rarely use a cable (only for cases when I need to leave immediately and have low battery or for file transfer)
+ Having a phone, a watch, and earbuds that all work with wireless charging, I only carry one charger for everything when traveling.
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WHY NOT WIRELESS CHARGING:
Unless you have a similar issue with the charging port, I don't see any advantage.
• You can't use the phone while it's charging (unlike with a cable where you can at least hold the phone in your hand)
• It charges slower
• It increases temperature and reduces battery life.
• It requires alignment, the process is not as "seamless" as just plugging it in. If it's not properly aligned, it may not charge, charge slowly, or heat up.
• It consumes more power (negligible difference, but it's a fact)
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To prevent excessive heating, I disable fast wireless charging from the settings, enable power saving mode, and leave it charging overnight as it takes 3-4 hours to charge.
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Most of these may sound like minor issues, but I thought they might be of interest to potential buyers

A high-quality charger that is worth every euro if you are in the Samsung ecosystem and have devices that can support it. It comes in handy when you want to charge your phone and wearables at the same time. Additionally, I consider it to have a beautiful, minimal design and it looks stylish as an object on a desk.

Based on my experience, I can say that it charges the Galaxy Watch 4, Buds Live, and Buds 2 in a reasonable amount of time. I did not notice any increase or decrease compared to the time it would take to charge them with the cables included in their packages. I also did not feel any difference in the temperature of the devices, neither during nor after charging.

My phone (S21 FE) supports fast wireless charging and the battery percentage indeed increases quickly. However, the temperature also noticeably rises, which is balanced by the fan that the charger has (which operates faster when fast charging is enabled), without reaching the point of cooling down the device. On the contrary, the phone remains warm, so the fan simply helps prevent it from becoming hot. I suppose the temperature of the phone must reach around 40 degrees Celsius. Additionally, I believe this can negatively affect the long-term health of the battery. All of this applies to fast charging. If it is not enabled, the phone charges slowly but does not increase in temperature.
The fan still operates, but of course, it does so more slowly and is hardly noticeable. Even during fast charging, the sound produced by the fan is not bothersome. However, I would not activate fast charging if I were going to sleep and the charger was next to my bed.

It is worth noting that fast wireless charging requires a connection of at least a 25W charger. This specific product does not include a cable or charger - only the base is included.

Finally, I should mention that it charges the iPhone XS, albeit slowly, without increasing the temperature. The AirPods Pro also charge normally. However, it cannot charge an Apple Watch in any of the positions - they are incompatible (like trying to connect two magnets with the same poles).

Personally, I highly recommend this product, and I believe it is a good purchase for 40 euros.
If you need a charger and cable, spend a little more and check out the package that already includes them, otherwise, buy them separately if you want to save money.

Edit: The Galaxy Watch 5 will not charge at the predicted speed like the charger included in its package. That one reaches 10W. This wireless charger, in the watch charging position, can provide a maximum of 5W.
I think there is an updated version of the wireless charger (visually identical to the one shown here) that supports 10W in the watch position, but what is certain is that this model reaches up to 5W for the watch.