Seiko Cal. 4418 - 133

This Spring Drive model from 1997 features a 37mm Hardlex-Coated Steel case. Powered by the 4418 caliber with 26j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-977197d91b18]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1997

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