Seiko Cal. 6637 - 567

The Seiko 6637-567 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-ec56cc545ae4]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1983

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