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Seiko Marinemaster


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Seiko Marinemaster Steel 39.9mm Black No numerals United States of America, Pennsylvania, Bala Cynwyd
Seiko Prospex Diver Limited Edition SLA017
$5,950
Free shipping
Professional dealer
1406
US
Seiko Marinemaster Steel 44mm Blue United States of America, Florida, Hallandale Beach
Seiko Prospex Marine Master Professional Blue Dial ON SPECIAL
$2,549
Professional dealer
222
US
Seiko Marinemaster Steel United States of America, Pennsylvania, Philadelphia
Seiko Prospex 200m Great Blue Hole Baby Marine Master
$1,150
Professional dealer
1361
US
Seiko Marinemaster Steel 47.7mm Black United States of America, California, San Mateo
TOP
Seiko Marine Master Professional 300M Tuna SBBN031 - SBBN031
$1,349
Free shipping
Professional dealer
3897
US
Seiko Marinemaster Steel 43mm Black No numerals United States of America, New Jersey, Rahway
Seiko Marinemaster MM300 SBDX001 (RARE)
$3,975
Professional dealer
17
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
819
US
Seiko Marinemaster Titanium 49.4mm Black No numerals United States of America, New York, NY
Seiko Prospex Marine Master Diver Watch SBBN025
$2,210
Professional dealer
231
US
Seiko Marinemaster Titanium 53.3mm Blue No numerals United States of America, New York, New Jersey
Seiko Marinemaster
$4,348
Private Seller
 
US
Seiko Marinemaster Titanium 52mm Brown No numerals
TOP
Seiko Marinemaster SBDX016 8L35-00J0
$2,479
Free shipping
Professional dealer
233
JP
Seiko Marinemaster Steel Black United States of America, Florida, Orlando
Seiko Prospex
$4,975
Professional dealer
217
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
195
US
Seiko Marinemaster Steel United States of America, Pennsylvania, Philadelphia
Seiko Prospex MarineMaster SBEC001
$2,225
Professional dealer
1361
US
Seiko Marinemaster Steel 47.7mm Black United States of America, California, San Mateo
Seiko Marine Master Professional 300M Diver Quartz SBBN033 -...
$1,139
Free shipping
Professional dealer
3897
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
Professional dealer
223
US
Seiko Marinemaster Titanium 48mm Black United States of America, Florida
Seiko Prospex Marine Master 1000M Tuna Can Automatic SBDX014
$2,450
Professional dealer
175
US
Seiko Marinemaster 40mm United States of America, New Jersey, kinnelon
Seiko Prospex Limited Edition Diver
$4,800
Private Seller
 
US
Seiko Marinemaster Titanium 44.8mm Black
Seiko Prospex LX Marinemaster SBDB027 / SNR029 NEW
$5,063
Professional dealer
487
JP
Seiko Marinemaster Steel 40mm Black United States of America, Massachusetts, East Longmeadow
Seiko Marinemaster SLA017
$5,200
Private Seller
 
US
Seiko Marinemaster Steel 44.3mm Black No numerals United States of America, Texas, Houston
Seiko Marinemaster
$2,400
Private Seller
 
US
Seiko Marinemaster Steel 44.3mm Black No numerals United States of America, Florida, Orlando
Seiko Marinemaster
$3,875
Professional dealer
217
US
Seiko Marinemaster Steel Blue No numerals United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster 300m SLA023
$3,300
Professional dealer
1361
US
Seiko Marinemaster Steel 47.70mm Black United States of America, California, San Mateo
Seiko Prospex Divers Marinemaster 300 Ninja Tuna - SBBN035
$1,169
Free shipping
Professional dealer
3897
US
Seiko Marinemaster Steel 47mm Black United States of America, Florida, Pompano Beach
Seiko Prospex MarineMaster Professional 300m Black Tuna...
$995
Professional dealer
195
US
Seiko Marinemaster Steel Black No numerals United States of America, Washington, USA
Seiko MARINE MASTER PROFESSIONAL 300M SBDX023 / SLA021 JAPAN...
$3,266
Free shipping
Professional dealer
223
US
Seiko Marinemaster Steel 48mm Black United States of America, Florida
Seiko Prospex Marine Master SBBN031
$1,200
Professional dealer
175
US
Seiko Marinemaster Steel 44.3mm Green
Seiko PROSPEX DIVER SCUBA MARINE MASTER 140TH ANNIVERSARY...
$3,341
Professional dealer
487
JP
Seiko Marinemaster Titanium 53.5mm Blue
Seiko Prospex Marine Master Automatic Professional 1000 55th...
$3,975
Professional dealer
57
JP
Seiko Marinemaster Steel 47.7mm Black No numerals
Seiko Marinemaster Professional
$979
Private Seller
 
CA
Seiko Marinemaster Steel 44mm Blue No numerals
Seiko Prospex Diver's Marinemaster SLA023J1
$3,058
Professional dealer
2248
DE
Seiko Marinemaster Titanium United States of America, Pennsylvania, Philadelphia
Seiko Prospex MarineMaster GPS
$2,900
Professional dealer
1361
US
Seiko Marinemaster Steel 44.3mm Blue United States of America, California, Burlingame
Seiko Prospex Marine Master Professional 300M Diver Automatic...
$3,129
Free shipping
Professional dealer
3897
US
Seiko Marinemaster Titanium 50mm Black United States of America, Florida, Pompano Beach
Seiko Prospex MarineMaster Professional Yellow Tuna SBBN027...
$2,195
Professional dealer
195
US
Seiko Marinemaster Titanium Blue
Seiko Marinemaster Gps Prospex
$3,058
Professional dealer
 
FI
Seiko Marinemaster Steel 47.7mm
Seiko Prospex Marine Master Professional 300m SBBN035 7C46-0AG...
$840
Free shipping
Professional dealer
538
JP
Seiko Marinemaster Steel 44mm Black No numerals
Seiko Prospex Marinemaster SBDX017 FULL SET
$3,665
Professional dealer
674
ES
Seiko Marinemaster Titanium Black
Seiko Prospex Marinemaster 600 M
$4,821
Professional dealer
285
UK
Seiko Marinemaster Steel Black
TOP
Seiko Marinemaster
$5,313
Private Seller
 
UK
Seiko Marinemaster Titanium 52,4mm Green No numerals
Seiko Prospex SEA Marinemaster 1000m Tuna Gundam 40th Annivers...
$4,771
Professional dealer
2248
DE
Seiko Marinemaster United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster 1000m Tuna SBDX013
$2,695
Professional dealer
1361
US
Seiko Marinemaster Steel 44mm Green No numerals
TOP
Seiko Marinemaster SBDX021 (SLA019J1) Limited to 1968pcs ...
$4,160
Private Seller
 
FR
Seiko Marinemaster 44.3mm United States of America, California, San Mateo
Seiko Marine Master Professional 300M - SBDX023
$2,899
Free shipping
Professional dealer
3897
US
Seiko Marinemaster Steel 44,3mm Black No numerals
Seiko SLA021J1 Marinemaster Prospex Automatic 300M
$2,876
Free shipping
Professional dealer
1743
NL
Seiko Marinemaster Titanium 48.2mm
Seiko Prospex Marine Master 50th anniversary of the birth of...
$4,713
Free shipping
Professional dealer
538
JP
Seiko Marinemaster Steel Black
Seiko Prospex Diver's Watch SLA017J1 (Limited Edition)
$5,664
Professional dealer
92
UK
Seiko Marinemaster Steel 44mm Green No numerals
Seiko Prospex Marinemaster 300 Deep Forest Limited Edition FULL
$3,910
Professional dealer
674
ES
Seiko Marinemaster Steel 44.3mm Black No numerals
Seiko Marinemaster
$2,376
Professional dealer
33
HK
Seiko Marinemaster Steel 44mm Black No numerals
Seiko Prospex Diver's Marinemaster SLA021J1
$3,180
Professional dealer
2248
DE
Seiko Marinemaster Steel Black United States of America, Pennsylvania, Philadelphia
Seiko Marinemaster 300M SLA025
$7,500
Professional dealer
1361
US
Seiko Marinemaster Steel Blue No numerals
Seiko Marinemaster 300
$2,184
Private Seller
TH
Seiko Marinemaster Titanium 49.4mm United States of America, California, San Mateo
Seiko Prospex Sea Marine Master SBBN025 - SBBN025
$1,719
Free shipping
Professional dealer
3897
US
Seiko Marinemaster Steel 44,3mm Blue No numerals
Seiko SLA023J1 Marinemaster Propsex Automatic 300M
$2,876
Free shipping
Professional dealer
1743
NL
Seiko Marinemaster Steel 44.7mm
Seiko Prospex Marine Master Professional 300m SBBN035 7C46-0AG...
$888
Free shipping
Professional dealer
538
JP
Seiko Marinemaster Titanium 48.5mm Black No numerals
Seiko SEIK セイコー PROSPEX プロスペックス マリーンマスター オーシャンクルーザー Marine...
$1,211
Professional dealer
 
JP
Seiko Marinemaster Titanium 52.4mm Black No numerals
Seiko Prospex Marine master divers watch Titanium SBDX013 (NEW)
$2,867
Professional dealer
378
JP
Seiko Marinemaster 42mm Black
Seiko Prospex Automatic Diver MEN Watch SLA017J1 (New, 2000...
$6,347
Professional dealer
110
JP
Seiko Marinemaster Steel 44,8mm Black No numerals
Seiko Prospex Marinemaster 1968 High-Beat SLA025 Limited Edition
$6,606
Professional dealer
2248
DE
Seiko Marinemaster Steel 44.3mm Black No numerals United States of America, Pennsylvania, Philadelphia
Seiko Prospex Marinemaster SLA021 300m
$2,875
Professional dealer
1361
US
Seiko Marinemaster Steel 44mm No numerals
Seiko Marinemaster
$42,828
Private Seller
 
ES
Seiko Marinemaster Black United States of America, California, San Mateo
Seiko Prospex Marine Master Professional 1978 Quartz Divers -...
$2,429
Free shipping
Professional dealer
3897
US
Seiko Marinemaster Steel 44mm Black No numerals
Seiko Marinemaster SBDX017 BOX/PAPERS
$2,942
Professional dealer
142
PL
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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.


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