Released in 2018, still in the catalogue, this is not the Polaris we discuss the most. Strangely, because it has some good points: A Titanium case, the combination of two friendly complications, a water resistance of 100 meters, and two great dials, blue or black.
It is a bit big, with a diameter of 44 mm, but it wears smaller, in real life.

I would happily live with a solid case back, though.
What do you think?
Best,
Nicolas