Seiko Cal. 7156 - 973

The Seiko 7156-973 represents an important milestone in Seiko's 1970 lineup. Powered by the 7156 caliber with 34j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-b8884ea8791b]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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