Seiko Cal. 6660 - 339

This Quartz model from 1976 features a 38mm PVD Black case. It features a Cream dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-7af7ae3671cb]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1976

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