Seiko Cal. 3818 - 630

The 3818-630 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3818 caliber with 18j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-d6d030aaaac3]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1965

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