Seiko Cal. 5678 - 717

The Seiko 5678-717 represents an important milestone in Seiko's 1978 lineup. Powered by the 5678 caliber with 20j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-41c08a527684]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1978

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