Seiko Cal. 3811 - 233

The Seiko 3811-233 represents an important milestone in Seiko's 1991 lineup. Powered by the 3811 caliber with 21j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-2fc070daead4]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1991

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