Seiko Cal. 3837 - 920

The 3837-920 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3837 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-44be5ad88b56]

Also known as: Silverwave, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1976

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