217.30.42.21.01.003Ref

The 217.30.42.21.01.003, introduced in 2025, has a 42mm polished/brushed steel case, flat AR-coated sapphire, and 600m WR. Its grade 5 titanium screw-in back bears the seahorse; an orange ceramic bezel with white hybrid ceramic scale and polished titanium inner ring sits around the matte black dial with rhodium-plated hands/indexes, white lume, and four orange Arabic numerals. The METAS-certified caliber 8912 (3.5Hz, twin barrels, ~60h reserve, free-sprung silicon balance) powers the watch, which is delivered on a polished-brushed steel bracelet with extendable rack-and-pusher clasp and diver extension.