Seiko Cal. 3840 - 815

This Spring Drive model from 1965 features a 35mm Stainless Steel case. Powered by the 3840 caliber with 18j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-27240c153d34]

Also known as: Silverwave, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1965

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