Seiko Cal. 3812 - 931

The Seiko 3812-931 represents an important milestone in Seiko's 1999 lineup. Powered by the 3812 caliber with 25j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-0c9431a309fb]

Also known as: Helmet, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1999

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