Seiko Cal. 3851 - 821

The 3851-821 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3851 caliber with 19j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-7517179a57c8]

Also known as: Tuna, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1973

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