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  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
  • Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039
Seiko

Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039

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Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039

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According to Seiko, the acronym “LX” basically means “light” in Latin, designed by a reputable Japanese designer, Mr. Ken Okuyama. He might be a stranger to many watch enthusiasts but not to those in the motor world, where he had worked on the Porsche 911 (specifically the 996). While he was at Pininfarina, his designs including the Enzo, 456M, and California from Ferrari.

Seiko Prospex LX Marinemaster Kokebozu - Ltd Ed 500pcs Ref. SBDB039 / SNR045J1

All of the “classic revivals” show Okuyama’s effort to keep the DNA for the brands through and through, therefore, can be seen in the new Seiko LX collection. “I aimed to take the unique inheritance and integrity that Seiko has built-in sports watches over the decades and bring them alive in a design that has simplicity, harmony, power, and presence. The Prospex LX is a true Seiko with a thoroughly contemporary feel..” Mentioned Japan’s designer. The LX Diver attained the Diver’s Watch Prize in 2019 at GPHG (Grand Prix d’Horlogerie de Genève), all thanks for its sleek aesthetic and finesse, much coveted by watch fans all over the world.

Now onto the collection, both Seiko and Okuyama brought back the design of the 1960s professional divers and 90s tool watches, like the legendary duo Ref. 6215 and 6159. We definitely can see this in the newly iterated Prospex LX Marinemaster Kokebozu edition Ref. SBDB039/SNR0045J1.

Fan-shaped power reserve indicator reflects the SpringDrive movement underneath

Firstly, this sea variation astounds with its modern look and resistance to the harshest environmental conditions. Featuring a broad and flat surface case all made out of titanium to keep it lightweight. The case measures at 44.8mm wide and 15.7mm thick, all finished with high-end Zaratsu polishing modus operandi, a combination of satin-brushed and polished surfaces with a super-hard coating known as Diashield. The use of titanium means this watch is exceptionally comfortable due to its weight or lack of.

Okuyama knows his stuff, as he pays tribute to the 1960s “marine masters” (Ref. 6215, 6159), the new LX Diver features the classic Marinemaster’s bezel found on the SBDB011 and SBDX023 -unidirectional titanium bezel befits a glossy green ceramic insert, with luminous glowing green too, from 12 o’clock triangle to the 20-minute marker.

What sets the “Kokebozu” apart from its contemporaries is its unique forest green tone that reflects the underwater forest of moss pillar at the bottom of Skarvsnes Foreland in Antarctica. The theme follows on to the dial. Underneath the sapphire crystal, the appealing ribbed patterned dial evokes the aquatic moss pillars coined as “moss child” by Japanese researchers. Affectionately known as “Kokebozu”, the various moss and algae are found in Skarvsnes Foreland that is located 55 kilometers away from the Japanese research facility known as Shawm Station.

Full titanium case and bracelet with super-hard coating

Back to the watch, it features applied hour markers with high Zaratsu-finished metal trims around them, paired with the signature fan-shaped applied power reserve at 8 o’clock. The date has the Grand Seiko’s date font, and it does not stop there. The date window’s frame has excellent bevelling done with satin-finishing. One might not find this effort and details on other majority watches, even those that are priced much higher.

Since having the power reserve indicator on the dial, Seiko’s collector quickly recounts the movement that tucks neatly behind. The Prospex LX Marinemaster Ref. SBDB039/SNR045J1 powered by Seiko’s iconic Spring drive movement, 5R65. The 30 jewels Spring drive movement featured that particular power reserve of 72 hours (3 days) with an accuracy of ±1 second per day and used primarily in the Grand Seiko.

Let us digress a little here and spend some time understanding (or try to) the Spring drive concept. The Spring Drive is a conventional automatic movement with a few critical components replaced. Namely, the functional timekeeping parts are gone: the pallet fork, escape wheel, balance wheel, and hairspring. Replacing them is a tri-synchro regulator, a new way of extremely precisely controlling the amount of power coming out of the mainspring. The tri-synchro regulator converts kinetic energy from the mainspring into electrical energy, which powers a quartz crystal and an electromagnetic brake, slowing the movement down following information from the quartz crystal.

Seiko lumibrite glows brightly in the dark

Lastly, the LX Marinemaster completes the sporty package with a full satin-finished titanium bracelet with the one-of-a-kind ratcheting diver extension found on the Seiko signed clasp.

Summing things up, the latest Prospex LX is limited to 500 pieces and relives the mystical scenery of the underwater forest with its unique moss pillars within the waters of Antarctica. The LX Marinemaster continues to pave a new path for Seiko’s sports line, which defies the typical diver's norms. It spots on with impeccable movement, spectacular finished case, and bracelet. Its titanium case is quite something unveiling the amount of work Seiko’s watchmakers have put into it, packed with a GS date display, power reserve counter, and Dia-Shield. Suppose you are in the market for Seiko’s most exceptional Prospex sports watch. In that case, this is the watch to consider a proper diving companion that reflects the beauty of the ocean with the majestic depths of its trendy design.

Specifications

icon-maker
Maker
Seiko Japan
icon-movement
Movement
Caliber 5R65, Spring drive
icon-accuracy_range
Accuracy range
±15 seconds per month (average) (±1 second per day)
icon-dial
Dial
Green with applied luminous indexes
icon-luminous
Luminous
Lumibrite
icon-calendar
Calender
3 O'clock
icon-case
Case
Titanium with super hard coating
icon-crown_type
Crown type
Screwdown
icon-lug_width
Lug width
22mm
icon-crystal
Crystal material
Curved (inner) sapphire crystal, Anti-reflective coating on inner surface
icon-strap
Strap
Titanium with super hard coating
icon-water_resistance
Water resistance
300m
icon-dimensions
Dimensions
44.8mm in diameter, 50.9mm lug to lug, 15.7mm thick