Seiko Cal. 4518 - 638

This Spring Drive model from 1968 features a 45mm Titanium case. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-5836eb5839fd]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1968

Related Models

• Seiko 4542-232
• Seiko 5661-929
• Seiko 6251-192
• Seiko 0750-233
• Seiko 6371-949
• Seiko 5695-895
• Seiko 6175-968
• Seiko 4542-623
• Seiko 6270-998
• Seiko 6654-531
• Seiko 4538-849
• Seiko 7122-663