Seiko Cal. 3813 - 928

The Seiko 3813-928 represents an important milestone in Seiko's 1971 lineup. Powered by the 3813 caliber with 27j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-203aa786362c]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1971

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