Seiko Cal. 5240 - 921

Seiko 5240-921

The Seiko 5240-921 represents an important milestone in Seiko's 1976 lineup. Powered by the 5240 caliber with 34j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-5f3e056798f1]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
13.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Champagne
Jewels
34j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1976

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