Seiko Cal. 0728 - 218

This Spring Drive model from 1967 features a 39mm Titanium case. Powered by the 0728 caliber with 29j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-7c3f55e09a08]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1967

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