Seiko Cal. 0731 - 636

Released in 1973, the Cal. 0731 with design code 636 was part of Seiko's domestic market collection. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-1af7bb94d3e2]

Also known as: Silverwave

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1973

Related Models

• Seiko 5243-159
• Seiko 6143-906
• Seiko 5667-892
• Seiko 0753-252
• Seiko 6621-107
• Seiko 6190-658
• Seiko 7138-266
• Seiko 3856-422
• Seiko 7032-265
• Seiko 0738-653
• Seiko 5214-694
• Seiko 5629-418