Seiko Cal. 5636 - 991

This Hand-Winding model from 1981 features a 40mm Two-Tone case. It features a Silver dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-16ea5d07b33f]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1981

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