SEIKO Prospex Fieldmaster Automatic SBDY103 Made in Japan



  • Listed price: 61,600JPY
  • Case: Stainless Steel
  • Crystal: Sapphire 
  • Strap: Calf leather
  • Dial: Black
  • Crown: Screw-down crown
  • Lumi Bright: hands and markers
  • Waterproof: 200 m water resistance
  • Diameter: 42.4 mm (without the crown) 85g
  • Thickness: 11.7 mm Max wrist size: 20.5cm (8.07inch)

The chapter ring index, bezel index, and face index are not well aligned.
In general, Seiko’s screw-down crowns are not as smooth as the ones from Swiss manufacturers.


SEIKO Automatic 4R35

  • 23 Jewels
  • With Hand-winding and Hack function
  • Power reserve: 41 Hour
  • Accuracy: +45/-35 sec/day
  • Instructions
  • Original Seiko box
  • Seiko Japan official domestic one-year warranty
    (Please contact us first in case of repair during the warranty period.)

Customer Reviews

Based on 3 reviews
R.W. C.
Home Run

Seiko knocked it out of the park with this one, IMHO. I only wish they'd used a signed crown, which may seem a bit fanciful for field watch but it would have topped off the use of applied indices and logo. The watch is keeping great time (+/- 1-3 secs. a day avg. out of the box), you can't beat that for the price. Quality, fast service from Mr . Kobayashi, as always. Considering buying another as a gift for an uncle; from Seiya, naturally!

Juan B.
Great watches the service is

Great watches the service is fantastic, the prices are more than fair, and the delivery was super quick I receive them in 3 days, I don't know how this guys make it happen, more than happy with seiyajapan, first time with them but fur sure it's not going to be the last

Imtiaz B.
Fantastic watch. Wonderful case shape

Fantastic watch. Wonderful case shape and superb dial.
Delivered to Durban, South Africa in one week. Very impressive.
Complaints: the black calf skin strap doesn't really match the case....but thats easily remedied
Seiko should include the 6R35 movement in all its automatic watches > $300