The Montblanc Summit 3 can be updated to WearOS 3.2.

August 3, 2022

The Montblanc Summit 3, a $1,300 smart watch can be updated to WearOS 3.2 with the stock Google's UI. It makes it the first non-Samsung watch to have WearOS 3

The Montblanc Summit 3, with Wear OS 3.2 packed on it. Credits : MrMobile

The Montblanc Summit 3 is a $1,300 WearOS smartwatch packed with a Snapdragon 4100+, 1GB of RAM with 8GB of storage space, a 400 mAh battery, a 1.28" OLED screen. It's made of Sapphire and Titanium and it comes in a box with leather and rubber straps. But there is no LTE option and there is no speakers.
In terms of features, you can't make a call even via Bluetooth (since there are no speakers).

There is also something pretty interesting on this watch; the WearOS app is not used. But instead, you have to use manufacturer-branded and maintained app named Montblanc Summit. It's the same case as the Galaxy Watch4 Series.