Seiko Cal. 3840 - 782

The 3840-782 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3840 caliber with 31j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-e489113a68f8]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1985

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