Seiko Cal. 5637 - 996

The Seiko 5637-996 represents an important milestone in Seiko's 1975 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-acbe63785ac0]

Also known as: Sumo, Navigator

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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