Seiko Cal. 7056 - 639

The Seiko 7056-639 represents an important milestone in Seiko's 1974 lineup. Powered by the 7056 caliber with 24j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-31b624552bf2]

Also known as: Tuna, Crown

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1974

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