Seiko Cal. 0730 - 428

This Quartz model from 1987 features a 36mm Hardlex-Coated Steel case. Powered by the 0730 caliber with 22j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-76e02f11846b]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1987

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