Seiko Cal. 5642 - 870

This Solar model from 1978 features a 36mm Hardlex-Coated Steel case. Powered by the 5642 caliber with 22j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-e35c026fe0a1]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1978

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