Seiko Cal. 5678 - 156

The Seiko 5678-156 represents an important milestone in Seiko's 1976 lineup. Powered by the 5678 caliber with 20j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-43f11f5fdf1d]

Also known as: Samurai, Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1976

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