Seiko Cal. 5677 - 721

Seiko 5677-721

The 5677-721 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5677 caliber with 19j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-f642200b51f9]

Also known as: UFO, Sea Horse

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
37mm
Case Thickness
10.1mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
200m
Dial Color
Black
Jewels
19j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1972

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