Heuer | Monaco Ref. 1533BThe Heuer Monaco Ref. 1533B is an early evolution of the brand's iconic square chronograph, retaining the bold 40mm waterproof case design introduced with the original 1133B but upgraded with the Calibre 15 automatic movement. Its metallic blue purple dial shifts beautifully in light, paired with contrasting white registers and a left side crown at 9 oclock for that distinctive Monaco aesthetic. This reference blends avant garde geometry with everyday