Seiko Cal. 0721 - 478

This Spring Drive model from 1974 features a 42mm Titanium case. Powered by the 0721 caliber with 24j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-df5fb2b0f6ea]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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