Thanks for the fascinating series.
I have 2 points of order.
Force = Mass x Acceleration; so for a given external force (impetus), the acceleration of the watch would be less (i.e. less rate of change of velocity or displacement) if the Mass was HIGH. So the lightness of Ti case is not the reason for the robustness of the watch. Maybe it is the movement or case designs but not the material. If the case were made of Densitometrium (R), it wouldn't accelerate at all - infinitely shockproof
I retract my previous description of "elegant"; gazooks - 46.3mm is way too porcine! I apologise to G-P and PeterCDE