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Seiko Marinemaster


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Seiko Marinemaster Steel 39mm Black No numerals United States of America, Pennsylvania, Bala Cynwyd
Seiko Prospex Diver Limited Edition SLA017
$5,950
Free shipping
Professional dealer
1660
US
Seiko Marinemaster Titanium 48.5mm Blue No numerals United States of America, Florida, Hollywood
Seiko Marinemaster GPS Prospex 48.5MM Ref#SSF001
$2,885
Professional dealer
881
US
Seiko Marinemaster Steel 50mm Black United States of America, California, Huntington Beach
Seiko Marinemaster Prospex Spring Drive 600m Sbdb013 Stainless...
$3,954
Professional dealer
349
US
Seiko Marinemaster Steel 44mm Black No numerals United States of America, Missouri, Gladstone
Seiko Marinemaster 300 (SBDX017 modified with 012 bezel, dial,...
$2,000
Private Seller
 
US
Seiko Marinemaster Titanium 49.4mm Black No numerals United States of America, New York, NY
Seiko Prospex Marine Master Diver Watch SBBN025
$1,995
Professional dealer
504
US
Seiko Marinemaster Steel United States of America, Pennsylvania, Philadelphia
Seiko Prospex 200m Great Blue Hole Baby Marine Master
$1,150
Professional dealer
1673
US
Seiko Marinemaster Steel 44mm Blue United States of America, Illinois, BUFFALO GROVE
Seiko SIEKO PROSPEX PROFESSIONAL MARINEMASTER STAINLESS STEEL...
$2,500
Free shipping
Professional dealer
361
US
Seiko Marinemaster Steel 44mm Black No numerals United States of America, Nevada, LAS VEGAS
Seiko Marinemaster
$2,450
Private Seller
 
US
Seiko Marinemaster Steel 39.9mm Blue No numerals United States of America, California, El Segundo
Seiko 55th Anniversary SLA043 LE 62MAS Marinemaster Diver Blue...
$3,750
Professional dealer
178
US
Seiko Marinemaster Steel 44mm Black No numerals United States of America, Nevada, LAS VEGAS
Seiko Marinemaster
$2,250
Private Seller
 
US
Seiko Marinemaster Black United States of America, Florida, Orlando
Seiko Prospex Marine Master Diver Professional Limited Edition
$2,575
Professional dealer
327
US
Seiko Marinemaster Steel 44.3mm Green No numerals United States of America, Alabama, Hoover
Seiko Prospex Marinemaster Professional 300M SBDX043 Limited...
$2,299
Private Seller
 
US
Seiko Marinemaster Steel Black No numerals United States of America, Washington, USA
Seiko MARINE MASTER PROFESSIONAL 300M SBDX023 / SLA021 JAPAN...
$3,267
Free shipping
Professional dealer
294
US
Seiko Marinemaster Steel 47.7mm Black No numerals United States of America, New Jersey, Upper Saddle River
Seiko Prospex Marine Master 300m Japan Edition Ref SBBN033
$1,395
Professional dealer
62
US
Seiko Marinemaster Steel Blue No numerals United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster 300m SLA023
$3,300
Professional dealer
1673
US
Seiko Marinemaster Black United States of America, South Carolina, Greenville
Seiko Marinemaster SLA021
$2,100
Private Seller
 
US
Seiko Marinemaster Steel 44.3mm Black No numerals United States of America, Nevada, LAS VEGAS
Seiko Marinemaster
$2,950
Private Seller
 
US
Seiko Marinemaster Steel 40mm Black United States of America, Illinois, BUFFALO GROVE
Seiko DIVER 200M STAINLESS STEEL CASE RUBBER STRAP SLA017 FULL...
$5,250
Free shipping
Professional dealer
361
US
Seiko Marinemaster Steel 43mm Black United States of America, Florida, Pompano Beach
Seiko Original MarineMaster SBDX001 JDM 300m Diver AUTOMATIC...
$3,995
Professional dealer
248
US
Seiko Marinemaster Steel 44.3mm Black United States of America, California, Burlingame
Seiko Prospex Marinemaster Watch 44.3mm - SLA021J1
$3,149
Free shipping
Professional dealer
4753
US
Seiko Marinemaster Titanium 48mm Black No numerals United States of America, Florida
Seiko Prospex Marine Master 1000M Tuna Can Automatic SBDX014
$3,000
Professional dealer
219
US
Seiko Marinemaster Steel 44mm Black No numerals United States of America, New York, Troy
Seiko Custom Marinemaster submerse-with (1) year warranty
$625
Professional dealer
111
US
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Marinemaster
$2,596
Private Seller
 
CA
Seiko Marinemaster Steel Black United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster 300M SLA025
$7,500
Professional dealer
1673
US
Seiko Marinemaster Steel 52mm Black United States of America, Florida, Sarasota
Seiko Marinemaster SBDX013 Black PVD Steel 52mm 1000M Automati...
$2,499
Professional dealer
399
US
Seiko Marinemaster Steel 48mm Black
Seiko Prospex Marinemaster Professional Diver 300M Stahl Quarz...
$3,410
Professional dealer
1899
DE
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Marinemaster
$2,370
Professional dealer
43
HK
Seiko Marinemaster Steel 44.3mm Blue United States of America, Florida, Pompano Beach
Seiko Prospex MarineMaster Blue Ocean SLA023J1 300m Diver...
$3,495
Professional dealer
248
US
Seiko Marinemaster Steel 47.7mm Black United States of America, California, San Mateo
Seiko Marine Master Professional 300M Tuna SBBN031 - SBBN031
$1,529
Free shipping
Professional dealer
4753
US
Seiko Marinemaster Steel 46mm Black No numerals United States of America, Florida
Seiko Marine Master Professional SBBN015
$1,500
Professional dealer
219
US
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Seiko Marinemaster – the Diving Watch for Pros

Watches from the Seiko Marinemaster series meet the demands of professional divers. Top watches can even withstand the pressure at depths of 3000 m. The workmanship is of the highest quality and on par with Swiss luxury watches.


Highlights

  • Top models are water resistant to 1000 m (100 bar)
  • Robust diving watches suited to professional needs
  • Reliable, precise in-house caliber
  • Recognizable designs from the Seiko Marinemaster series

Seiko Marinemaster – made for extreme expeditions

Models from the Seiko Marinemaster line are expert diving watches that tick reliably even under extreme conditions. Top models from the series are water resistant to 1000 m (100 bar), making them ideal for the professional diver. In 2014, the Marinemaster Professional 1000m was even attached to the outside of an unmanned research submarine and reached depths of 3000 m without any problems.

Features of these watches include large cases, readable dials, brightly glowing hands and index markers, and a crown position at 4 o'clock. The Japanese manufacturer Seiko uses very precise quartz movements or robust automatic calibers such as the 8L35, which is particularly reliable and long lasting. The models of the Seiko Marinemaster series belong to the Prospex collection, which stands for "professional specifications" and includes numerous sports watches fit for professional use.


How much does a Seiko Marinemaster cost?

Model Reference number Price (approx.) Water Resistance
Marinemaster Professional 1000m Diver’s Hi-Beat Limited Edition (700 pieces) SBEX001 6,400 euros 1,000 m (100 bar)
Marinemaster Professional 600m Spring Drive SBDB011 4,200 euros 600 m (60 bar)
Marinemaster Professional 300m Limited Edition (1,000 pieces) SBDX012 3,500 euros 300 m (30 bar)
Marinemaster Professional 1000m SBDX013 3,400 euros 1,000 m (100 bar)
Marinemaster Professional 300m Limited Edition (200 pieces) SLA015 3,000 euros 300 m (30 bar)
Marinemaster Professional 300m SBDX001 2,700 euros 300 m (30 bar)
Marinemaster Professional 300m SBDX017 2,200 euros 300 m (30 bar)

Detailed Price Information

Prices for a mint condition Seiko Marinemaster range from about 1,000 euros for a quartz model to around 4,200 euros for a Marinemaster Professional 600m Spring Dive with a new, high-precision escapement system. For Seiko collectors and enthusiasts, the limited special editions are of particular interest. The Prospex Marinemaster 300m with the reference number SBDX012 is one such model and was limited to a run of 1,000 pieces. If you hope to find one of these watches in good condition, you should set aside about 3,500 euros.

Even harder to come by is the Marinemaster Professional 1000m Diver’s Hi-Beat Limited Edition , which was limited to 700 pieces and has the reference number SBEX001. What sets this titanium watch apart is the in-house movement 8L55 with its balance wheel that vibrates at a frequency of 36,000 alterations an hour (A/h). In contrast, the balance wheel of the caliber 8L35, which ticks in many other Marinemasters, vibrates at the more common frequency of 28,800 A/h. At the time of its release, the SBEX001 cost 6,400 euros. These two limited editions were introduced in 2015 in commemoration of the 50th anniversary of Seiko diving watches.


Seiko Marinemaster 300 vs. Seiko Sumo

The Seiko Marinemaster 300 serves as a good entry point into the Marinemaster series. In terms of appearance, this watch is reminiscent of the popular Seiko Sumo largely due to its 44-mm stainless steel case, diving bezel, and crown at 4 o'clock. The Sumo is also water resistant to 300 m (30 bar), but the two watches differ in their details. The caliber 6R15 ticks in the Sumo, whereas the Marinemaster 300 is powered by the higher-quality and more precise 8L35. The design of the numerals and minute markers on the unidirectional bezels of these watches also differs.

If you examine the cases closely, you'll notice that the backs of these watches are not the same. The Sumo has a conventional screw-down case back, whereas the Marinemaster 300 has a Monobloc case, which can only be opened from the front. This means that the inner mechanics of the watch can only be accessed if one removes the bezel, watch glass, and the dial and hands. The Japanese manufacturer uses its in-house Hardlex crystal in both models, which is more robust than conventional mineral glass, but not as hard as sapphire glass. The advantage of the Monobloc case is that helium molecules cannot infiltrate the watch, making it suitable for professional saturation diving. Both models bear the tsunami logo on their case backs, as is typical of Seiko diving watches, and have excellent finishing. The high quality satin-brushed and polished surfaces is on par with Swiss luxury watches.

You can buy a Seiko Marinemaster 300 with reference number SBDX001 in mint condition for about 2,700 euros. The model with reference number SBDX017 is easier to find and can be bought for around 2,200 euros. A Seiko Sumo with reference number SBDC031 is significantly more affordable, selling for around 450 euros.


To the ocean floor with the Seiko Marinemaster 1000m

If 300 m (30 bar) water resistance is not sufficient for you, you should take a closer look at the Marinemaster Professional 1000m. As its name suggests, this professional diving watch is water resistant to 1000 m (100 bar). In 2014, this model even held up at 3000 m underwater. This kind of resistance to pressure calls for a massive, robust case. Thus, the Marinemaster 1000m with reference number SBDX013 is 48 mm in diameter and 17 mm thick. This large case is reminiscent of a tuna can, which led to the watch's nickname "Tuna".

Even though this timepiece isn't exactly suited to everyday use, it enjoys immense popularity among Seiko fans. The model with reference number SBDX013 has a titanium case with black titanium carbide plating, making it even more durable. It fits on the wrist with a flexible silicon strap and keeps the time with the caliber 8L35, which has a power reserve of 50 hours and is also used in the MM 300. The daily deviation lies between +15 and -10 seconds and is thus not quite on the level of a Swiss chronometer. Seiko uses its proprietary luminescent material LumiBrite on the hands and index markers, making them easily legible in the dark.

For those who are less attracted to a black design, the Seiko Marinemaster Professional 1000m with reference number SBDX014 presents an appealing alternative. This model is identical in construction with the Ref. SBDX013, but distinguishes itself with red-gold elements. In contrast to the MM 300, the SBDX014 and SBDX013 models use sapphire glass to protect the display from outside influences. Sapphire glass is indeed significantly harder and more scratch resistant than Hardlex crystal, but does crack more quickly. Both Marinemaster 1000m models cost about 3,400 euros new.