Seiko Cal. 3816 - 991

This Quartz model from 1967 features a 39mm Two-Tone case. It features a White dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-880fa7c2c9fd]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1967

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