Neither GS nor Presage, the Prospex line is a Seiko brand, and the LX is the top of that group of sport watches.
Here's the latest offering:
The LX line of Prospex is 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.
This 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 at the edge of 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 colored sapphire glass bezel. The stratosphere’s change in color from black to blue is expressed in the graded dial and the two-tone color 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.
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 Prospex re-creation of the 1968 Diver’s was honored 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 center of gravity creates a modern look and greater comfort on the wrist.
It is equipped with Caliber 5R66, a Spring Drive movement with a GMT function that proved its performance in space. 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.
SNR049J
Caliber
Number: 5R66
Movement: Spring Drive
Accuracy: ±1 second per day / ±15 seconds per month (average)
Duration: Approx. 72 hours(3 days)
Exterior
Sapphire crystal
Super-clear crystal coating
Lumibrite on hands and indexes
Three-fold clasp with push button release
Other Details
Water Resistance 10 bar
Case Size
Thickness: 14.7 ㎜
Diameter: 44.8 ㎜
Length: 50.9 ㎜
Weight: 146.0 g
Other Specifications
Titanium case and bracelet, coated 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
Other Features
24-hour hand (dual time display function)
30 jewels
Calendar-linked time difference adjustment function
Date display
Power reserve display
Stop second hand function
LIMITED to 400 units / Available Nov 2020 / Price approx $6000 US