Seiko Cal. 3840 - 131

The Seiko 3840-131 represents an important milestone in Seiko's 1973 lineup. Powered by the 3840 caliber with 18j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-b30f77bdea15]

Also known as: Crown, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1973

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