Seiko Cal. 4518 - 133

This Spring Drive model from 1978 features a 45mm Stainless Steel case. Powered by the 4518 caliber with 31j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-b86d49b7e129]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1978

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