Seiko Cal. 6637 - 278

This Quartz model from 1990 features a 39mm Two-Tone case. It features a Black dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-21b3e8b74ff3]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1990

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