Seiko Cal. 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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