Prospex SPB451J1 Watch

The Watch

Rooted in tradition since 1881, Seiko has consistently pushed the boundaries of watchmaking as a pioneer of major technologies. True to its heritage of quality and precision, it introduces the Prospex SPB451J1 - a dive watch that's built tough, reliable, sporty, and timelessly stylish. Crafted entirely in stainless steel with a scratch-resistant coating, its robust barrel-shaped case is a perfect showcase of the brand's expertise. Designed to fit all men's wrists, it measures 40 mm in diameter and 13 mm thick, with brushed and polished finishes that enhance its striking look. The unidirectional bezel features an elegant knurled edge for easy grip and sports a blue insert with a minute track and a luminescent marker. It frames a domed sapphire crystal that shields the dial from scratches and delivers outstanding legibility thanks to its anti-reflective coating. The screw-down crown at 3 o'clock has precise knurling for a secure grip when setting the hands or date. The screw-down caseback completes the package with a water resistance of 30 ATM.

The Dial

This watch sports a beautifully legible dial that delivers total satisfaction - both visually and functionally. Set against a dark blue, subtly textured background with a sunray effect that brings the markers to life, the dial is framed by a classic minute track with bold markers at every 5-minute interval. Thick rectangular indices, doubled at 12 o'clock and filled with LumiBrite, ensure excellent readability in low light. The baton hour and minute hands are crafted in silver-toned metal and coated in LumiBrite, paired with a slender seconds hand tipped with a small luminescent rectangle for a refined finishing touch. A discreet round date window sits neatly between 4 and 5 o'clock. The brand name is printed below 12 o'clock, with the movement and water resistance indicated at 6 o'clock.

The Movement

This timepiece runs on a Japanese automatic movement - the Seiko 6R55 caliber, fitted with 24 jewels and beating at 21,600 vibrations per hour, delivering a 72-hour power reserve. Reliable and high-performing, it operates at an accuracy of +25/-15 seconds per day and provides dependable three-hand analog display with date.

The Bracelet

This model features a robust stainless steel bracelet with a scratch-resistant treatment, ensuring lasting aesthetics and durability. Its comfortable wear makes it a staple among dive watches. With a 20 mm lug width, it is composed of three rows of links and features a brushed finish that harmonizes with its silver tone. Secured by a push-button deployment clasp, it delivers timeless, elegant style for any occasion.

Water Resistance

With a water resistance of 30 atmospheres - equivalent to 300 meters - this watch is ready for any aquatic adventure. Fully waterproof, it's built to go wherever you go: shower, bath, swimming, freediving, or scuba diving. To preserve the long-term water resistance, our watchmakers recommend avoiding crown or pusher operation while submerged.