Seiko Cal. 3884 - 644

The Seiko 3884-644 represents an important milestone in Seiko's 1966 lineup. Powered by the 3884 caliber with 21j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-39477853fb15]

Also known as: Tuna, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1966

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