Seiko Cal. 3811 - 423

The 3811-423 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3811 caliber with 18j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-be7dbbc4c174]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1991

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