The first photos of Logitech MX Master 4 have appeared online

Logitech is close to officially announcing the successor to its popular MX Master 3S mouse, the MX Master 4. The device has recently received Bluetooth certification in Brazil, which confirms the imminent launch of the new product.

Here's What We Know

According to the Brazilian publication Tecnoblog, MX Master 4 under the code number MR0118 was tested by the Anatel regulator on 9 May 2025. The certification is required due to the Bluetooth connection of the mouse, which falls into the category of "limited emission transmitters".

Although there are no photos of the device in the documents, a small promotional teaser briefly appeared on Logitech's official Instagram, but was quickly removed after a copyright complaint. However, the image has already been shared on Reddit.

MX Master 4 announced/confirmed?
by u/Okinawaboy93 at MouseReview

The unofficial photos show that the design changes of MX Master 4 are moderate but noticeable. The side scroll wheel has been slightly raised and moved forward, and the main click buttons have become larger and now take up more space next to the Magspeed wheel.

The MX Master line is known for its high level of performance, popularity among creatives and developers, as well as the ability to customise gestures and work with multiple devices simultaneously. This makes Logitech mice not only a tool for work, but also a convenient gadget for everyday use and even light gaming.

There are no official announcements about the MX Master 4 yet, but with the certification and marketing materials that have already appeared, we can expect the model to launch in the near future.

Source: 9to5Mac