Seiko Cal. 0777 - 922

Seiko 0777-922

The 0777-922 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0777 caliber with 30j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-6eb2a58a7fbd]

Also known as: Bullhead, Helmet

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
8.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Champagne
Jewels
30j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1975

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