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Seiko Marinemaster

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Seiko Marinemaster Steel 44.3mm Black No numerals United States of America, Georgia, Atlanta
TOP
Seiko Prospex MarineMaster 300M SLA021J Automatic - Black dial
$2,675
Free shipping
Verified Dealer
73
US
Seiko Marinemaster Titanium United States of America, Pennsylvania, Philadelphia
TOP
Seiko Marinemaster
$2,800
Private Seller
 
US
Seiko Marinemaster Titanium 44.3mm Black No numerals United States of America, Texas, Austin
Seiko SLA021 Prospex Marine Master Pro Dive
$2,700
Verified Dealer
42
US
Seiko Marinemaster Titanium 48mm Black No numerals United States of America, Florida, Hollywood
Seiko Prospex Marinemaster 1000m EMPEROR TUNA Titanium/Ceramic
$2,450
Verified Dealer
 
US
Seiko Marinemaster Steel Black No numerals United States of America, Florida, Orlando
Seiko Marinemaster
$3,875
Verified Dealer
63
US
Seiko Marinemaster Steel 47.7mm Black No numerals United States of America, California, El Segundo
Seiko SBBN033 MARINEMASTER Professional
$785
Verified Dealer
41
US
Seiko Marinemaster Steel 47.70mm Black United States of America, California, San Mateo
Seiko Prospex Divers Marinemaster 300 Ninja Tuna - SBBN035
$889
Free shipping
Verified Dealer
2327
US
Seiko Marinemaster Steel 44mm Black No numerals United States of America, Illinois, Elmwood Park
Seiko Marinemaster 300m SBDX017
$2,500
Private Seller
 
US
Seiko Marinemaster Steel Black United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster 300M SLA025
$5,500
Verified Dealer
801
US
Seiko Marinemaster Steel Black
Seiko Marine Master Professional 300M Tuna SBBN031 - SBBN031
$1,080
Verified Dealer
777
JP
Seiko Marinemaster Steel 48mm Black No numerals United States of America, Maryland, Fulton
Seiko Tuna Marinemaster (additional Seiko rubber strap)
$950
Private Seller
 
US
Seiko Marinemaster Steel Black No numerals United States of America, Washington, USA
Seiko MARINE MASTER PROFESSIONAL 300M SBDX023 / SLA021 JAPAN...
$2,700
Free shipping
Verified Dealer
131
US
Seiko Marinemaster Steel Black No numerals United States of America, New Jersey, East Brunswick
Seiko Marinemaster. SLA021. Under full Seiko Warranty 4/16/2020
$2,380
Free shipping
Verified Dealer
37
US
Seiko Marinemaster Steel 39.9mm Black United States of America, California, LOS ANGELES
Seiko NOS SLA017
$5,700
Private Seller
 
US
Seiko Marinemaster Steel 39mm Black United States of America, Massachusetts, Norwood
Seiko SLA017
$4,700
Private Seller
 
US
Seiko Marinemaster Steel Black United States of America, California, San Mateo
Seiko Marine Master Professional 300M Tuna SBBN031 - SBBN031
$1,109
Free shipping
Verified Dealer
2327
US
Seiko Marinemaster Steel 45mm Black No numerals United States of America, California, El Segundo
Seiko SLA021 Prospex Automatic Marinemaster Professional 300...
$2,675
Verified Dealer
41
US
Seiko Marinemaster United States of America, Pennsylvania, Philadelphia
Seiko Marine Master Professional SBBN027 - SBBN027
$2,100
Verified Dealer
801
US
Seiko Marinemaster Black United States of America, Florida, Orlando
Seiko Marinemaster
$2,575
Verified Dealer
63
US
Seiko Marinemaster Steel 39.9mm Black United States of America, California, Los Angeles
Seiko Marinemaster
$4,600
Private Seller
 
US
Seiko Marinemaster Steel Black
Seiko Marine Master Professional 300M Diver Quartz SBBN033 -
$863
Verified Dealer
777
JP
Seiko Marinemaster Steel 39mm United States of America, California, LOS ANGELES
Seiko SLA017
$5,550
Private Seller
 
US
Seiko Marinemaster Steel Black No numerals United States of America, New Jersey, USA
Seiko MARINE MASTER PROFESSIONAL 300M SBDX023 / SLA021 JAPAN...
$2,800
Free shipping
Verified Dealer
131
US
Seiko Marinemaster Titanium 44mm Black United States of America, Washington, Bellevue
Seiko Prospex Marine Master Spring Drive Professional Titanium...
$3,200
Verified Dealer
122
US
Seiko Marinemaster Steel Black United States of America, California, San Mateo
Seiko Marine Master Professional 300M Diver Quartz SBBN033 -
$979
Free shipping
Verified Dealer
2327
US
Seiko Marinemaster Steel Black No numerals United States of America, Virginia, Virginia Beach
Seiko Marinemaster
$999
Private Seller
 
US
Seiko Marinemaster United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster
$2,695
Verified Dealer
801
US
Seiko Marinemaster Titanium 48.2mm Black No numerals United States of America, New Jersey, Rahway
Seiko Marinemaster 1000m "Emperor Tuna" with Custom leather...
$2,850
Verified Dealer
11
US
Seiko Marinemaster Steel 44.3mm Blue No numerals
Seiko Prospex Marinemaster, Ref. SLA023J, S/S, Box, Papiere
$3,294
Verified Dealer
56
DE
Seiko Marinemaster Steel Black
Seiko Marinemaster
$915
Free shipping
Verified Dealer
 
MY
Seiko Marinemaster Steel 44mm
Seiko Prospex Marinemaster Professional Diver 300m
$3,073
Verified Dealer
122
CH
Seiko Marinemaster Steel
Seiko Prospex Marine Master professional 300 7C46-0AG0 Quartz
$898
Free shipping
Verified Dealer
297
JP
Seiko Marinemaster Steel 43mm Black United States of America, Washington, Bellevue
Seiko Prospex Padi Diver 200m Automatic Baby Marine Master...
$1,000
Verified Dealer
122
US
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Marine Master Professional SBDX014 - SBDX014
$3,159
Free shipping
Verified Dealer
2327
US
Seiko Marinemaster Ceramic 48mm Black
Seiko Marine Master Automatic Professional "Emperor Tuna" -...
$4,316
Verified Dealer
65
MC
Seiko Marinemaster Titanium Black United States of America, Pennsylvania, Philadelphia
Seiko Prospex S23626 1000M MarineMaster
$2,300
Verified Dealer
801
US
Seiko Marinemaster Steel 43mm Black No numerals United States of America, New Jersey, Rahway
Seiko Marinemaster MM300 SBDX001 (RARE)
$3,975
Verified Dealer
11
US
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Prospex Marine master Professional Automatic Limited 600
$3,142
Verified Dealer
87
JP
Seiko Marinemaster Steel Black
Seiko Marinemaster
$1,056
Free shipping
Verified Dealer
 
MY
Seiko Marinemaster Steel Black No numerals
Seiko Marinemaster
$2,499
Private Seller
 
DE
Seiko Marinemaster Steel 44mm Black No numerals
Seiko Prospex Marinemaster 300 Professional
$2,952
Verified Dealer
123
BG
Seiko Marinemaster Titanium
Seiko Prospex Marine Master SBDB008 5R65 100th anniversary
$4,742
Free shipping
Verified Dealer
297
JP
Seiko Marinemaster Titanium Black United States of America, California, San Mateo
Seiko Prospex Marine Master Professional SBDB011 - SBDB011
$3,699
Free shipping
Verified Dealer
2327
US
Seiko Marinemaster Ceramic 49.4mm
Seiko Marine Master Prospex Quartz Diver's Limited 1978 Pcs. -...
$3,180
Verified Dealer
65
MC
Seiko Marinemaster United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster
$2,995
Verified Dealer
801
US
Seiko Marinemaster Steel Black No numerals
Seiko Marinemaster SLA021 like NEW bracelet + ISOfrane
$3,012
Verified Dealer
80
PL
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Prospex Marinemaster Core Shop Model BDX023 / SLA021
$2,952
Verified Dealer
87
JP
Seiko Marinemaster Steel Black
Seiko Marinemaster
$938
Free shipping
Verified Dealer
 
MY
Seiko Marinemaster Steel 44,3mm Black
Seiko Marinemaster Zimbe
$6,815
Private Seller
 
DE
Seiko Marinemaster Steel 44mm Black No numerals
Seiko Marinemaster 300 M Automatik Diver SBDX001 B&P 1....
$3,294
Verified Dealer
135
AT
Seiko Marinemaster Titanium
Seiko Marine Master Ocean Cruiser SBED003 8X53-0AL0-2 GPS Solar
$1,331
Free shipping
Verified Dealer
297
JP
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Marine Master Professional SBDX013 - SBDX013
$2,699
Free shipping
Verified Dealer
2327
US
Seiko Marinemaster Steel 44mm Green No numerals
Seiko Prospex Marinemaster 300 Deep Forest Limited Edition FULL
$4,424
Verified Dealer
489
ES
Seiko Marinemaster Steel United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster SLA021
$3,100
Verified Dealer
801
US
Seiko Marinemaster Steel 50,5mm Black No numerals
Seiko SLA021J1 Prospex Marinemaster Professional Diver 300m.
$2,904
Free shipping
Verified Dealer
94
JP
Seiko Marinemaster Steel 48mm Black
Seiko Marinemaster Prospex SBBN033
$828
Free shipping
Verified Dealer
73
JP
Seiko Marinemaster Steel 44mm Blue No numerals
Seiko MARINEMASTER ZIMBE SLA013J1
$13,033
Private Seller
 
IT
Seiko Marinemaster Steel 44,3mm Black No numerals
Seiko Prospex 300m Marinemaster Limited Black SBDX033 SLA035J1
$4,542
Verified Dealer
1529
DE
Seiko Marinemaster
Seiko Prospex Marine Master Professional - SBDB013
$2,824
Verified Dealer
777
JP
Seiko Marinemaster Titanium
Seiko Marinemaster Prospex Professional 1000m 8L35-00H0 Automatic
$2,361
Free shipping
Verified Dealer
297
JP
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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.