Seiko Cal. 6178 - 423

The Seiko 6178-423 represents an important milestone in Seiko's 1975 lineup. Powered by the 6178 caliber with 29j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-f17229d0b45e]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1975

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