Seiko Cal. 6640 - 771

This Automatic model from 1995 features a 37mm Stainless Steel case. It features a Champagne dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-6a7b3d94d3b7]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1995

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