Seiko Cal. 3840 - 131

This Spring Drive model from 1992 features a 35mm Titanium case. Powered by the 3840 caliber with 33j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-9cdcda61b8f9]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1992

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