Ergonomics
In terms of construction, the design is quite elaborate, even if the materials used are not as high-end as those of the MX Masters. The plastic is generally smooth, except on the sides where a raised rubber-like coating has been applied for a better grip.
The coating prevents fingers from slipping.
The mouse isn’t part of Logitech’s ergonomic range, but we feel efforts on this side. The edges have a shape with pronounced curves, which is a good welcome for the thumb. On the other hand, the symmetrical design is not the most pleasant for the opposite fingers (particularly the small and middle fingers) who don’t really take advantage of this curve. So we prefer the shape of the MX Master that feels better in the hand, but is also more imposing.
react to palm grip is ideal.
We tested the mouse in size L (41.5 x 65.6 x 118 mm for 111 g – with battery). So it is not the lightest, which is not necessarily very important in office automation. The supplied battery should offer an autonomy of about 2 years, depending on the use.
It is located under the mouse cover, next to the housing for the Logibolt, the brand’s small wireless receiver that gradually dongle unite. You can indeed connect the mouse to your computer via this receiver or via Bluetooth. The pads under the mouse are also made of PTFE and therefore ensure a smooth glide.
In total, the Signature M650 has 5 buttons. The two main clicks are perfectly quiet, which is one of the strong points of the mouse in not disturbing its neighbors in an open space. There are two secondary clicks on the thumb and one click on the wheel.
The grip is good, but not perfect.
The latter benefits from SmartWheel technology which offers very lightly notched scrolling but smooth when you want to go faster. On the other hand, it’s not completely free, unlike the MX Master 3’s MagSpeed, but this hybrid solution is interesting and avoids having to press anywhere to select notched mode or free mode. It is also very quiet.
Strengths
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Silent buttons and wheel.
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Bluetooth and Logibolt connection.
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Excellent autonomy.
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Efficient Smart Wheel.
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Available in wide and left-handed versions.
Weak points
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Not connecting to multiple devices.
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No horizontal scroll wheel.
Conclusion
How does the assessment work?
The Signature M650 is a good wireless mouse that has the advantage of being perfectly quiet. It is pleasant to use and has some practical features, but not as advanced as the MX Masters, which are admittedly more luxurious. Its battery and its enormous autonomy are also assets. We simply regret the lack of a multi-device connection available on other models, but the value for money turns out to be very interesting in the end.
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Ergonomics
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Accuracy
