Seiko Cal. 6637 - 941

This Quartz model from 1986 features a 42mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-b51b1a70053e]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1986

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