Seiko Cal. 6639 - 964

This Automatic model from 1988 features a 38mm Titanium case. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-0a9bf63f8296]

Also known as: Crown, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1988

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