Seiko Cal. 3818 - 917

The 3818-917 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3818 caliber with 20j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-84fc94a3e17c]

Also known as: Samurai, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1969

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