Seiko Cal. 3817 - 673

Released in 1972, the Cal. 3817 with design code 673 was part of Seiko's domestic market collection. Powered by the 3817 caliber with 17j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-c98af9dfd3a2]

Also known as: Bullhead, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1972

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