Seiko Cal. 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

Related Models

• Seiko 4559-797
• Seiko 5671-924
• Seiko 6217-459
• Seiko 6315-138
• Seiko 3846-309
• Seiko 0767-845
• Seiko 7136-144
• Seiko 6612-876
• Seiko 3811-949
• Seiko 7155-802
• Seiko 7142-569
• Seiko 0773-155