Seiko Cal. 0771 - 663

Seiko 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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