Seiko Cal. 3897 - 821

This Hand-Winding model from 1966 features a 38mm Titanium case. Powered by the 3897 caliber with 34j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-1dd99075fa3c]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

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