Seiko Cal. 3840 - 813

This Quartz model from 1968 features a 41mm PVD Black case. It features a Champagne dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-4dbcbae2d6e4]

Also known as: Turtle, Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1968

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