Seiko Cal. 3840 - 231

The 3840-231 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3840 caliber with 31j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-79edb539bd2d]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1986

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