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The Seiko Prospex SRPB55 is a 44 mm automatic dive watch with a black ion-plated stainless steel case, a black dial with gold-tone LumiBrite hands and markers, and a black silicone strap. It meets the dive-watch basics: 200 m water resistance, a screw-down crown, a one-way rotating elapsed-time bezel and Seiko's 4R35 automatic movement with a date at 3 o'clock. Against pricier Swiss divers it gives comparable depth rating and lume for far less, though its Hardlex crystal and non-hacking-adjacent movement feel a step below sapphire-and-ceramic rivals. It suits divers and desk divers who want a rugged, legible tool watch with a stealthy blacked-out look.
In stockSold by The Wrist OutletReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Owners rate the SRPB55 as a solid, good-looking automatic diver with strong lume and a comfortable strap. Most criticism centers on the Hardlex crystal and the large case size rather than the movement or water resistance.
It has a black dial with gold tone LumiBrite hands and index hour markers, and a one-way rotating black bezel for timing elapsed time. The bezel carries a gold tone minute scale.
The dial shows hours, minutes and seconds, with minute markers around the rim and a date window at the 3 o'clock position. The logo sits beneath the 12 o'clock position. A hardlex crystal covers the dial, and a screw-down crown helps seal the case.
It runs on an automatic movement and is water resistant up to 200 meters. The 22 mm black silicone strap fastens with a buckle clasp.
