Seiko Cal. 6641 - 813

This Spring Drive model from 1989 features a 37mm Titanium case. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-34980e11f17e]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1989

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