Seiko Cal. 3864 - 669

This Hand-Winding model from 1997 features a 37mm PVD Black case. Powered by the 3864 caliber with 28j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-0a5efd23ceb4]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1997

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