Proportion and all-day wearability
The Trident Pro 300 40 is a genuinely thin dive watch: 40mm across, 11.3mm thick and about 47.4mm lug to lug on a 20mm lug width, with a case-head weight Christopher Ward states at 68g (around 160g on the steel Bader bracelet). The Aquis Date 41.5 is a bigger watch on paper — 41.5mm across, about 12.9mm thick and roughly 49mm lug to lug, with a 22mm interhorn width — though its short lugs and curved case-to-bracelet integration make it sit more compactly than those raw numbers suggest. That shaping narrows the gap; it does not erase it. The Trident is the thinner, lighter watch by a real margin and the easier one to slide under a cuff. Try both on rather than trusting a single wrist-size rule.
41.5 × ~12.9mm, short lugs

