Seiko Cal. 6641 - 774

This Hand-Winding model from 1993 features a 37mm Stainless Steel case. Powered by the 6641 caliber with 33j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-001ecd965f35]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1993

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