Excellent field watch for the money. The Ratio Quest Lewis & Clark RTQ015 wears very comfortably at 39.6 mm and only 9.5 mm thick. The green dial has a distinctive military look and excellent daytime readability, while the sapphire crystal and 100 m water resistance are impressive at this price. The olive NATO strap completes the rugged look perfectly. Fantastic value and a very satisfying purchase.
Seiko Prospex SRPD21J1 “Great White Shark” – Made in Japan Automatic Diver Turtle
Seiko Prospex SRPD21J1 “Great White Shark” – Made in Japan Automatic Diver Turtle
The Seiko Prospex SRPD21J1 is one of those divers that immediately grabs attention. Part of Seiko’s ocean-inspired Prospex collection, this Japanese-made automatic diver combines the legendary Turtle-style case with a striking blue wave-pattern dial and a distinctive blue-and-silver rotating bezel.
The dial is the star of the show. Its layered ocean-wave texture shifts between brilliant blue and deep navy depending on the light, giving the watch far more character in person than a conventional flat dial. Large LumiBrite-filled markers and Seiko’s bold diver hands provide excellent visibility, while the day/date display at 3 o’clock keeps it practical for everyday wear.
Underneath is Seiko’s proven Caliber 4R36 automatic movement, offering both manual winding and hacking seconds. The stainless-steel case features Seiko’s recognizable cushion-shaped diver profile, protected crown at 4 o’clock, Hardlex crystal, and a solid stainless-steel bracelet.
Most importantly, this isn't simply a dive-inspired sports watch. The SRPD21J1 is a Prospex professional-specification diver with 200 meters of water resistance, giving it the rugged construction that has made Seiko divers favorites among collectors for generations.
Specifications
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Reference: SRPD21J1
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Collection: Seiko Prospex
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Nickname: “Great White Shark”
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Movement: Seiko Caliber 4R36 Automatic
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Functions: Hours, minutes, seconds, day & date
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Manual Winding: Yes
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Hacking Seconds: Yes
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Power Reserve: Approx. 41 hours
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Case: Stainless steel
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Case Diameter: Approx. 45 mm
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Crystal: Hardlex
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Dial: Blue wave-pattern
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Bezel: Unidirectional rotating diver bezel
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Lume: Seiko LumiBrite
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Water Resistance: 200 meters / 660 feet
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Bracelet: Stainless steel
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Crown: Screw-down, positioned at 4 o’clock
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Manufacture: Made in Japan
Why collectors like it: The SRPD21J1 takes the classic Seiko Turtle formula and gives it considerably more personality. The textured ocean-blue dial, two-tone blue/silver bezel and Made-in-Japan configuration make this a particularly attractive Prospex for anyone who wants a serious Seiko diver that doesn't look like every other black-dial tool watch.
SEO title: Seiko Prospex SRPD21J1 Great White Shark Automatic Diver 200M – Made in Japan
Meta description: Shop the Seiko Prospex SRPD21J1 Great White Shark, a Made-in-Japan automatic diver featuring a blue wave dial, 4R36 movement, stainless-steel bracelet and 200M water resistance.