Seiko Cal. 3813 - 697

The 3813-697 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3813 caliber with 35j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-4bc5971ea13a]

Also known as: Bullhead, Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1970

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