Seiko Cal. 3891 - 980

This Quartz model from 1978 features a 38mm Hardlex-Coated Steel case. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-a68b46734ffd]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1978

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