A review that thoroughly verified the evolution by disassembling Logitech's top wireless mouse 'MX Master 3' has appeared

From September 27, 2019, the wireless mouse '

MX Master 3 ' has appeared in Logitech's high-end mouse ' MX Master ' series known as the Logitech brand in Japan. MX Master 3 is one generation ago from the result of disassembling a high-end mouse with a suggested retail price of 13,500 yen by Eric Weinoffer, an engineer who supports product development of venture companies at Venture Capital Bolt.io It summarizes how much it has evolved compared to the model of.

Logitech MX Master 3 vs 2S Teardown: Our favorite mouse got even better? The Bolt Blog

◆ Wheel improvement
This is MX Master 3.

This is the MX Master 3 cover that I removed immediately.

What Weinoffer felt was the most striking evolution was the wheel with the 'MagSpeed Electromagnetic Scroll' feature.

It is said that the

MX Master 2S one generation ago was unpopular with the noise when rotating the wheel, but the MX Master 3 is capable of 'scrolling 1000 lines per second' with almost no sound. On the other hand, by pressing the mode shift button in the center of the mouse, you can switch between 'free spin mode' where there is no resistance when turning the wheel and 'ratchet mode' where there is a feeling of resistance, so if you want a response or precision It comes in handy when you want to scroll.

When I remove the cover of MX Master 2S, it looks like this.

If you take out the wheel unit, you can see that there is a big motor behind the wheel. This motor is used to move the cam to control the wheel mode switching. In addition, soft rubber is attached to the outer circumference of the wheel.

On the other hand, the MX Master 3's wheel unit is clean. This is because the 'MagSpeed Electromagnetic Scroll' function, which magnetically controls the movement of the wheel, eliminates mechanical contact and eliminates the need for a motor. Also, thanks to the elimination of rubber on the MX Master 2S wheels, there is no need to worry about changes in usability due to deterioration of rubber or particles such as dust sticking to the rubber getting inside the mouse.

'For Logitech, switching wheels to electromagnetic ones isn't easy, and you're probably spending a fair amount of R & D, but there were benefits to it,' Weinoffer said. We praised Logitech's decision from a venture capital perspective.

◆ Interface improvement
Another point is the improvement points that take

ergonomics into consideration. The two side buttons of the MX Master 2S on the left are designed as if one button was split, and it was difficult to press them separately. On the other hand, in the MX Master 3 on the right, the two buttons are neatly independent.

As you can see from the back of the mouse, MX Master 3 has no overhanging part on the left side of the mouse, so you can now press the side button without forcibly moving your thumb.

Weinoffer also paid attention to the back of the

housing , which is the cover of the mouse. Since the ribs (framework) for reinforcement are reduced and neat, 'Plastic molding machine because the excess ribs are reduced by improving the skill of the engineer who designed the housing or hiring an experienced engineer. Should have significantly improved their lifespan. '

In addition, thanks to improved plastic molding technology, the housing is flexible enough to bend when gripped tightly.

As a result, the feeling of using the gesture button pressed with the thumb is improved.

◆ Electronics
We can see progress in the electronics part as well. The printed circuit board of MX Master 2S is divided into two, but ...

MX Master 3 is integrated. The model number of the optical sensor in the center is 'PMW3816DM', which is the same as MX Master 2S. On the other hand, the Bluetooth module has been upgraded to '

nRF52832 ', which has twice the memory of MX Master 2S ' nRF51802 ', and is now compatible with Bluetooth 5 .

Also, if you look at the tubular capacitor, you can see that it is firmly fixed by four parts. This capacitor is

a vibration-proof capacitor made by Panasonic , and is a substitute that can withstand fluctuations of acceleration up to 30G. Originally, by adopting parts for automobiles, the parts will not come off even if you operate the mouse quickly.

◆ Summary
'I was impressed with the progress of the MX Master 3, especially the wheel improvements, both of which are Logitech's commitment to continuous evolution and its efforts to maintain the user experience while reducing the number of parts,' Weinoffer said. It's a technical feat that has been done. Despite the dramatic changes in the placement of electronic components inside and the area of the board, the great reliability and accuracy that makes me love Logitech remains. ' I mentioned and praised the performance of MX Master 3.

MX Master 3 can be purchased from Amazon.co.jp, and the price is 13,500 yen including tax at the time of writing the article.

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in Hardware, Posted by log1l_ks