Seiko Cal. 3813 - 651

The Seiko 3813-651 represents an important milestone in Seiko's 1975 lineup. Powered by the 3813 caliber with 29j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-a8c23eb5cd7e]

Also known as: Helmet, Crown

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1975

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