Jaeger Lecoultre Polaris Chronograph World Time, Titanium, Blue or Black.
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?