Seiko Cal. 5257 - 979

Seiko 5257-979

Released in 1978, the Cal. 5257 with design code 979 was part of Seiko's domestic market collection. Powered by the 5257 caliber with 18j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-a6bf5595805c]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
15.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Champagne
Jewels
18j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1978

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seikata-wm-a6bf5595805c