Seiko Cal. 6178 - 420

The Seiko 6178-420 represents an important milestone in Seiko's 1967 lineup. Powered by the 6178 caliber with 23j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-fc276cd7bc91]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1967

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