Seiko Cal. 0789 - 646

This Quartz model from 1977 features a 42mm PVD Black case. Powered by the 0789 caliber with 28j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-ed1ede387457]

Also known as: Bullhead, Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1977

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