Seiko Cal. 0771 - 663

This Spring Drive model from 1970 features a 43mm Stainless Steel case. Powered by the 0771 caliber with 17j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-48c9b976d2b5]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1970

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