Seiko Cal. 3813 - 448

The Seiko 3813-448 represents an important milestone in Seiko's 1998 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-9ce03b4d483a]

Also known as: Helmet, Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1998

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