Seiko Cal. 3819 - 240

The 3819-240 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3819 caliber with 17j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-feb609705cd3]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1974

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