Seiko Cal. 3820 - 217

The Seiko 3820-217 represents an important milestone in Seiko's 1967 lineup. Powered by the 3820 caliber with 20j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-855d3a85a881]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1967

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