Seiko Cal. 0721 - 872

This Spring Drive model from 1975 features a 40mm Hardlex-Coated Steel case. Powered by the 0721 caliber with 19j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-14cff3550fb6]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1975

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