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SEIKO MarineMaster Professional 300M SEIKO Quartz Diver with a 48mm Case #SBBN031
Seiko SBBN031 Quartz MarineMaster Professional Dive Watch

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List Price: $1,400.00
Island Watch Price: $1,299.00
Savings: $101.00

Stock Status:
Ready to Ship

Product Code: SBBN031


SEIKO MarineMaster Professional 300M SEIKO Quartz Diver with a 48mm Case #SBBN031

This is a highly desired Seiko professional dive watch that is nicknamed the Tuna or Tuna Can. It features a 7-jewel, Seiko 7C46 movement that is accurate to within at least 15 seconds a month. Battery life is rated at 5 years. The watch is anti-magnetic, has a day and date display, highly luminous hands and markers treated with Lumibrite for awesome low light visibility, a screw down offset crown, a uni-directional diving bezel with luminous PIP at 12:00, a Hardlex crystal, and a solid etched, screw-down case back. The robust 48mm case includes a stainless steel shroud as added protection when diving. The SBBN031 model comes with stainless steel bracelet with an expanding divers clasp. Rated at 300 meters water resistance this watch can handle just about any diving adventure.
Watch Features:
  • Movement: Seiko 7C46 7-Jewel quartz (5-year battery operated)
  • Case: Stainless steel, 48mm x 14.7mm thick.
  • Back: Engraved screw-in back
  • Crystal: Hardlex Mineral
  • Band: Seiko bracelet, expanding divers clasp
  • Water Resistant: 300 meters
  • Warranty: 2 Years

Average Rating: 4.5 of 5 Total Reviews: 4 Write a review »

  1 of 1 people found the following review helpful:
Tuna!!! April 6, 2019
Reviewer: Daniel Hess from Beaverton, OR United States  
Have had the SBBN031 for about a month now loving this watch. Fit and finish is great and the purchase experience was fantastic. Thank you Mark.

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  0 of 0 people found the following review helpful:
seiko "Tuna" December 19, 2018
Reviewer: Joe Panepinto from Staten Island, NY United States  
Great service & delivery!

GREAT Watch!

Thanks Marc...

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  2 of 2 people found the following review helpful:
Confused on warranty October 8, 2018
Reviewer: Leonard Levy from Framingham, MA United States  

I ordered the watch on. Friday at about 3:50pm. The ordered was shipped on Monday and with my overnight FedEx that meets the process as described. The confusion I have is I expected an international warranty card stamped by Island Watch. What I got was a warranty that said it was only good in Japan.  I did pay more for the watch than it would have been on Amazon just to make sure I got a valid Seiko warranty. I am concerned that I won’t get a Seiko repair if something should happen.

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  3 of 3 people found the following review helpful:
Love it! February 8, 2017
Reviewer: Daniel from Ellington, CT United States  
The watch is large and heavy, but nicely balanced and comfortable to wear. The mix of brushed and polished surfaces along with the black bezel adds to the visual interest, and it looks even better in person. Definitely not a subtle piece, but it has a serious look to it, not flashy/tacky.

The seconds hand lines up perfectly with the markers all the way around, and the domed crystal does not distort the dial like some others when viewed at an angle. The crown action is very smooth, and changing the day or date results in a satisfying 'thunk' sound, which is the kind of detail I really appreciate.

The watch came to me perfectly packaged in a nice Prospex box, and was flawless, with all the protective tape attached. Shipping was quick, and Marc responded to a post-sale phone inquiry (about battery changes) very quickly. I couldn't be happier with the watch or the seller.

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