Seiko Cal. 6671 - 766

Seiko 6671-766

This Hand-Winding model from 1976 features a 37mm PVD Black case. Powered by the 6671 caliber with 35j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-ecf952c9eaee]

Also known as: Monster, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
9.6mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
40m
Dial Color
White
Jewels
35j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1976

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