Seiko Cal. 0777 - 571

The 0777-571 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0777 caliber with 28j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-9d985a49c4f0]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1976

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