Seiko Cal. 3897 - 917

This Quartz model from 1966 features a 40mm PVD Black case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-001e3ca02177]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1966

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