Seiko Cal. 3865 - 818

This Spring Drive model from 1967 features a 41mm Two-Tone case. Powered by the 3865 caliber with 32j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-8c173bd6505e]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1967

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