Seiko Cal. 6639 - 280

This Automatic model from 1977 features a 37mm Titanium case. It features a Cream dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-59a1da93b5ab]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1977

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