Seiko Cal. 6278 - 304

The 6278-304 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6278 caliber with 26j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-406e55f91cd0]

Also known as: Monster, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1976

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