Seiko Cal. 5637 - 872

This Solar model from 1977 features a 40mm PVD Black case. Powered by the 5637 caliber with 28j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-a568a59de131]

Also known as: Rally

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1977

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