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Seiko Marinemaster

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Seiko Marinemaster Titanium 48mm Blue United States of America, California, Huntington Beach
Seiko Hi-beat Marinemaster Pro Sbex005 Titanium
$4,883
Verified Dealer
224
US
Seiko Marinemaster Steel 47.70mm Black United States of America, California, San Mateo
Seiko Prospex Divers Marinemaster 300 Ninja Tuna - SBBN035
$839
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster 44mm United States of America, New York, New York
Seiko Marine Master 300m - SBDX001
$2,000
Private Seller
 
US
Seiko Marinemaster Steel 47.7mm Black No numerals United States of America, California, El Segundo
Seiko SBBN033 MARINEMASTER Professional
$785
Free shipping
Verified Dealer
29
US
Seiko Marinemaster Titanium 50mm Black
TOP
Seiko Marinemaster Prospex Springdrive SBDB013 Titan Black
$1,876
Verified Dealer
50
JP
Seiko Marinemaster United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster
$2,695
Verified Dealer
697
US
Seiko Marinemaster Steel Black No numerals United States of America, Florida, Orlando
Seiko Marinemaster
$3,875
Verified Dealer
48
US
Seiko Marinemaster Steel 44.3mm Blue No numerals United States of America, Maryland, USA
Seiko Marine Master Professional 300M SBDX025 / SLA023 (NEW)
$2,850
Free shipping
Verified Dealer
91
US
Seiko Marinemaster Titanium 44mm Black United States of America, Washington, Bellevue
Seiko Prospex Marine Master Spring Drive Professional Titanium...
$3,400
Verified Dealer
112
US
Seiko Marinemaster Steel 44,3mm Blue No numerals
Seiko SLA023J1 Marinemaster Propsex Automatic 300M
$2,906
Free shipping
Verified Dealer
1181
NL
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Marine Master Professional 300M Tuna SBBN031 - SBBN031
$989
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster Black United States of America, Alabama, San Francisco
Seiko Marinemaster
$2,300
Private Seller
 
US
Seiko Marinemaster Steel 45mm Black No numerals United States of America, California, El Segundo
Seiko SLA021 Prospex Automatic Marinemaster Professional 300...
$2,675
Free shipping
Verified Dealer
29
US
Seiko Marinemaster Steel 47.5mm Blue
TOP
Seiko Limited Edition Prospex Marine Master Professional SBBN037
$675
Verified Dealer
50
JP
Seiko Marinemaster United States of America, Pennsylvania, Philadelphia
Seiko Marine Master Professional SBBN027 - SBBN027
$2,100
Verified Dealer
697
US
Seiko Marinemaster Steel 43mm Black No numerals United States of America, New Jersey, Rahway
Seiko Marinemaster MM300 SBDX001 (RARE)
$3,975
Verified Dealer
9
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
91
US
Seiko Marinemaster Steel 44mm Black United States of America, Washington, Bellevue
Seiko Marinemaster Prospex Professional 300m Automatic Sla021j...
$2,650
Verified Dealer
112
US
Seiko Marinemaster Titanium 50.7mm
Seiko Marine
$2,167
Free shipping
Verified Dealer
66
JP
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Prospex Marine Master Professional 1978 Quartz Divers -...
$2,429
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster Steel 44.8mm Black United States of America, New York, New York
Seiko Marinemaster
$4,350
Private Seller
 
US
Seiko Marinemaster Steel Grey
Seiko Prospex SLA017 Limited Unworn FULLSET
$5,587
Verified Dealer
125
FI
Seiko Marinemaster Steel 44mm
Seiko Prospex Marinemaster Professional Diver 300m
$3,069
Verified Dealer
114
CH
Seiko Marinemaster Titanium United States of America, Pennsylvania, Philadelphia
Seiko Prospex MarineMaster GPS
$2,785
Verified Dealer
697
US
Seiko Marinemaster Steel 43mm Black No numerals
Seiko Marinemaster SBDX001 Prospex 8L35-0100
$2,238
Verified Dealer
1385
DE
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
91
US
Seiko Marinemaster Steel 43mm Black United States of America, Washington, Bellevue
Seiko Prospex Padi Diver 200m Automatic Baby Marine Master...
$1,000
Verified Dealer
112
US
Seiko Marinemaster Titanium
Seiko Prospex Marine Master Professional 600 Spring drive 5R66
$3,264
Free shipping
Verified Dealer
241
JP
Seiko Marinemaster United States of America, California, San Mateo
Seiko Prospex Sea Marine Master SBBN025 - SBBN025
$1,689
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster Steel 43mm
Seiko Marinemaster
$4,458
Private Seller
 
AU
Seiko Marinemaster Titanium Blue
Seiko Prospex GPS Solar Limited Edition SSF001J1
$2,718
Verified Dealer
185
PL
Seiko Marinemaster Steel 44mm Black
Seiko - Marinemaster - Ref. SBDX001 Prospex - 2010
$2,183
Verified Dealer
407
DE
Seiko Marinemaster Steel 48mm
Seiko Marinemaster 300 Tuna SBBN031 Diashield
$1,794
Verified Dealer
325
DE
Seiko Marinemaster Steel 44.3mm Black Arabic numerals
Seiko PROSPEX "300M MARINE MASTER" Hi-Beat Divers SLA021J1
$2,366
Verified Dealer
HK
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Prospex Marine master Professional Automatic Limited 600
$3,096
Verified Dealer
65
JP
Seiko Marinemaster Ceramic 48mm Black
Seiko Marine Master Automatic Professional "Emperor Tuna" -...
$4,143
Verified Dealer
51
MC
Seiko Marinemaster Titanium
Seiko Prospex Marine Master SBDB008 5R65 100th anniversary
$4,671
Free shipping
Verified Dealer
241
JP
Seiko Marinemaster United States of America, California, San Mateo
Seiko Marine Master Professional 300M - SBDX023
$3,089
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster
Seiko Tuna Marinemaster 300
$1,232
Private Seller
 
HU
Seiko Marinemaster Black
Seiko Marine Master Professional 300M Tuna SBBN031 - SBBN031
$979
Verified Dealer
696
JP
Seiko Marinemaster Steel 44mm Black
Seiko - Marinemaster - Ref. SBDX001 Prospex - 2013
$2,519
Verified Dealer
407
DE
Seiko Marinemaster Steel 44,3mm Black No numerals
Seiko Prospex Marinemaster SLA021J1
$3,022
Verified Dealer
97
FR
Seiko Marinemaster Steel 50,5mm Black No numerals
Seiko SLA021J1 Prospex Marinemaster Professional Diver 300m.
$3,002
Free shipping
Verified Dealer
51
JP
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Prospex Marinemaster Core Shop Model BDX023 / SLA021
$3,002
Verified Dealer
65
JP
Seiko Marinemaster Ceramic 49.4mm
Seiko Marine Master Prospex Quartz Diver's Limited 1978 Pcs. -...
$3,135
Verified Dealer
51
MC
Seiko Marinemaster Titanium
Seiko Marinemaster Prospex Professional 1000m 8L35-00H0 Automatic
$2,326
Free shipping
Verified Dealer
241
JP
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Marine Master Professional SBBN027 - SBBN027
$1,719
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster Steel 44,3mm Black
Seiko Marinemaster Zimbe
$7,950
Private Seller
 
DE
Seiko Marinemaster Steel 44mm Blue No numerals
Seiko MARINEMASTER ZIMBE SLA013J1
$12,847
Private Seller
 
IT
Seiko Marinemaster Steel 47.70mm Black
Seiko Prospex Divers Marinemaster 300 Ninja Tuna - SBBN035
$824
Verified Dealer
696
JP
Seiko Marinemaster Steel
Seiko SBDX023/SLA021J1 SEIKO PROSPEX SBDX023 Marine Master...
$2,814
Verified Dealer
471
JP
Seiko Marinemaster Steel 39mm Black
Seiko 62MAS ReEdition Limited Edition
$6,823
Private Seller
 
AE
Seiko Marinemaster Steel 44.3mm Blue No numerals
Seiko Marine Master Blue Professional 300M Ref. SBDX025 / SLA023
$3,113
Private Seller
 
BE
Seiko Marinemaster Steel 50,5mm Black No numerals
Seiko SBDX012 Prospex Marinemaster 50th Anniversary 300 meters.
$5,863
Free shipping
Verified Dealer
51
JP
Seiko Marinemaster Steel 44mm Black
Seiko Prospex SBDC061 (SPB077J1)Baby Marine Master MM200,...
$992
Private Seller
 
UK
Seiko Marinemaster Titanium 48mm Black
Seiko Marinemaster
$6,158
Private Seller
 
NL
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Marine Master Professional SBDX013 - SBDX013
$2,699
Free shipping
Verified Dealer
2011
US
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Marinemaster MM300 (SBDX017)
$2,682
Private Seller
 
UK
Seiko Marinemaster Steel
Seiko Prospex Marine Master Professional SBEX007 8L55-00D0
$5,610
Free shipping
Verified Dealer
241
JP
Seiko Marinemaster
Seiko Marine Master Professional 300M - SBDX023
$2,634
Verified Dealer
696
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.