Seiko Prospex LX SNR049J1

Seiko Prospex LX SNR049J1

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The LX line was introduced from the Prospex collection as the pinnacle of Seiko sports watches. The name “LX”, hints at the Latin word for light and is a subtle nod to the way that light is reflected in the broad, flat surfaces of each case. It is a premium sports watch collection that strikes the perfect balance of modern aesthetic sense with high practicality. The latest release, the Seiko Prospex LX SNR049J1.

Seiko Prospex LX SNR049J1
Seiko Prospex LX SNR049J1 – Scuba diver exploring the underwater caves and caverns.

The new LX line is equipped with Seiko‘s unique “Spring Drive” movement, which demonstrated its durability, strength, and capabilities through its use in outer space in 2008.

The limited-edition expresses the beauty of the earth’s atmosphere seen from outer space.

This is a special model in which the mystical scenery of earth, as seen from space, is brought to life by a graded dial and two-tone coloured sapphire glass bezel.

Seiko Prospex LX SNR049J1

Reproducing the Gradient Color of the Stratosphere

The stratosphere’s change in colour from black to blue is expressed in the graded dial and the two-tone colour bezel.

The beautiful finish of the watch shows various expressions that differ depending on the angle of light and is reminiscent of the beauty of the earth illuminated by the sun.Seiko Prospex LX SNR049J1

Evolution in design reflected in the watch case

The watch’s design is based on the historic 1968 Diver’s, Seiko’s first diver’s watch that had 300m water resistance and a high-beat movement.

A Seiko Prospex re-creation of the 1968 Diver’s was honoured the Sports Watch Prize in 2018 at the world’s most prestigious Grand Prix d’Horlogerie de Genève. The LX line inherits the original case design of the 1968 Hi-beat Diver’s.

The Zaratsu-polished distortion-free mirror surface of the case exterior and lowered centre of gravity creates a modern look and greater comfort on the wrist.Seiko Prospex LX SNR049J1

Seiko’s unique Spring Drive

It is equipped with Seiko Caliber 5R66, a Spring Drive movement with a GMT function that proved its performance in space.

Seiko Spring Drive’s natural glide motion of the seconds’ hand around the watch dial evokes the scene of a spaceship navigating in the silence of outer space.

The case back is marked with the letters “LIMITED EDITION” and a serial number between 001/400 and 400/400 as a certificate of limited quantity.

*In an actual product, the case back direction might be different from the photograph.

Seiko Prospex LX SNR049J1

Seiko Prospex LX SNR049J1 Technical Specifications

Reference SNR049J1


  • Calibre Number: 5R66
  • Movement Type: Spring Drive
  • Accuracy: ±1 second per day / ±15 seconds per month (average)
  • Duration: Approx. 72 hours(3 days)


  • Crystal: Sapphire crystal
  • Crystal Coating: Super-clear coating
  • LumiBrite: Lumibrite on hands and indexes
  • Clasp: Three-fold clasp with push-button release

Other details

  • Water Resistance: 10 bar
  • Case Size:
    • Thickness: 14.7 mm
    • Diameter: 44.8 mm
    • Length: 50.9 mm
    • Weight: 146.0 g
  • Other Specifications
    • Against an allergic reaction to metal
    • Clasp with Smart Adjuster function
    • LIMITED EDITION on the case back
    • Rotating bezel
    • Screw case back
    • Screw-down crown
    • Serial number engraved on the case back


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