Yes, the MX Master 3S is already equipped with Quiet Click technology. This technology reduces the click noise by 90% compared to the previous model, while retaining the tactile feedback.

I have since purchased the product and the mouse & keyboard both work via the one single USB.

The Logitech MX Keys S Combo (consisting of the MX Keys S keyboard and the MX Master 3S mouse) works with permanently installed rechargeable batteries, i.e. no battery operation with AA/AAA cells. Thank you for pointing this out. I have passed this on to the relevant department for correction and it will be dealt with as soon as possible.

Yes, the mouse and keyboard are Logi Bolt compatible and come with a pre-coupled Logi Bolt USB receiver for a secure and robust connection. Both devices are specially designed for use with Logi Bolt technology and can be easily operated together.

In the Eng. Int. version, the Enter key is elongated.

This is a CH QWERTZ layout. Unfortunately, we have not been provided with any images other than those already available.

The manufacturer provides instructions here: https://support.logi.com/hc/en-hk/articles/13750887759767-Getting-Started-MX-Keys-S-Combo

The mouse included in the MX Keys S Combo is specifically designed for right-handed users. There is no official version of this mouse that is suitable for left-handed users. Therefore, the mouse is not designed for the left hand. If you are looking for a left-handed mouse, you would need to look for another model that is specifically designed for left-handed users.

The MX Keys S Combo can be connected to all systems. You can use it with both your MacBook Pro and your Windows PC. You can use Bluetooth to connect to your MacBook Pro, which means you don't need a USB transition plug. The keyboard and mouse are wireless and can be connected via Bluetooth, which allows for flexible use.

The additional buttons of the mouse in the MX Keys S Combo basically work without additional software, as the basic functions of the mouse are supported directly. However, some advanced functions, such as customising buttons or using Smart Actions, require the installation of Logi Options+ software. This software is available for Windows and macOS and enables more extensive customisation of the mouse and keyboard functions.

The Logitech MX Keys S Combo keyboard and mouse can both be charged via USB-C. The keyboard and mouse are both battery-operated and are charged using a USB-C cable, which is included in the scope of delivery.

I bought exactly this keyboard and it corresponds to the CH layout

The main difference between the normal combo and the business combo lies in the connection technology and the security functions. The business version often uses the Logi Bolt Receiver, which offers more secure connections, while the normal version often uses the Unifying Receiver. In addition, the business version can be specially optimised for IT departments to provide an improved user experience and easier maintenance. Other differences may lie in the mouse model version, as the business version is often equipped with the MX Master 3S, which features a MagSpeed wheel and Quiet Click technology. The normal combo, on the other hand, could be characterised by simpler operation and fewer operational requirements.

I am right-handed and the mouse works wonderfully 👍

Done, thank you

These are serial images from the manufacturer, which is why keyboards often have the same images in different layouts. A comparison with the German keyboard layout clearly shows the differences between the keyboard layouts. For example, the @ sign is not on the Q key but on the 2 key and there is no ß to the right of the number key 0. The Swiss keyboard layouts also differ from one another, as the software has both a German-Swiss and a French-Swiss setting, which either display the umlauts ä, ö and ü, which are common in German, or the French letters é, à and è.

I use this mouse every day and very intensively, it works perfectly for me. Is the battery well charged? As soon as the battery reaches a low state of charge, dropouts could occur. However, I think that you have probably received a lazy mouse. Why don't you test it on different surfaces and fully charge the battery? If the problems persist, I would have the mouse replaced.

Yes, the brightness can be adjusted and is switched on by proximity/movement.

Unfortunately, the Logitech part number 920-012274 for the black keyboard with English layout is not available here.