Seiko Cal. 3815 - 503

Seiko 3815-503

This Spring Drive model from 1979 features a 36mm Stainless Steel case. Powered by the 3815 caliber with 36j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-2b8f413aed24]

Also known as: Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
15.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
White
Jewels
36j
Frequency
28,800 bph
Power Reserve
42 hours
Year
1979

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