1900mAh ...

The latter has already Logitech all expensive features to the brand.
Good finish, good build quality, handling adapted etc.

In the back we see four sliding pads instead of the usual three.
The outer covering (side) is "seized" So even after intensive gaming hours with feverish hands and moist it will not slip.
The top is against very classic with an all smooth plastic.
Okay decorations are more or less successful (it is a matter of taste at this level).

It comes in a nice box, or you do not get excited too to open ...
A small manual quick-start type and two USB cable connections and that's it ...
Too bad no CD-Rom installation, so if you want to use it fully you must first download the Logitech website the good drivers.
Given the mouse price, they could have done a little effort on that side.

It is a reasonable weight for wireless.
By cons, if you plug in a USB port for recharging the battery, the cable is quite thick and stiff we risk losing maneuverability.

Finally, I come to what is in my opinion the big negative:
What they have in mind to install Logitech ONE rechargeable battery 1900mAh ??? !!
While there are 2700 !!
Inevitably autonomy is reduced (very low)
Especially if you use the mouse to its maximum resolution.

For when it is operating normally it gives full satisfaction. Good reactivity, good slide, good grip, customizable buttons, release button scroll, etc. In short nothing wrong.
Logitech Frankly they could just stop being petty about this type of product, which is supposed to be quite upmarket.

In summary:

Good stuff, well finished, is holding correctly, but ...
... Autonomy limited by a battery undernourished!
(There remains only change when buying by another larger capacity)

TO @

Pogyz