Seiko Cal. 5644 - 381

This Automatic model from 1968 features a 38mm Stainless Steel case. Powered by the 5644 caliber with 23j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-89e818cd386a]

Also known as: Bellmatic, Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1968

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