Seiko Cal. 3837 - 147

This Automatic model from 1966 features a 41mm Two-Tone case. Powered by the 3837 caliber with 31j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-99fb5c0c5f97]

Also known as: Monster, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1966

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