Seiko Cal. 3855 - 531

This Spring Drive model from 1967 features a 44mm Two-Tone case. Powered by the 3855 caliber with 32j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-1feef45a4a0a]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1967

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