Seiko Cal. 0721 - 181

This Automatic model from 1966 features a 43mm Hardlex-Coated Steel case. Powered by the 0721 caliber with 17j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-37c02dae53fa]

Also known as: World Timer, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1966

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