Seiko Cal. 5690 - 978

This Hand-Winding model from 1983 features a 42mm Hardlex-Coated Steel case. Powered by the 5690 caliber with 17j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-e67985d2b1f4]

Also known as: Turtle, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1983

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