Seiko Cal. 3815 - 659

This Spring Drive model from 1969 features a 38mm Two-Tone case. Powered by the 3815 caliber with 28j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-cb67ac0146f3]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1969

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