Seiko Cal. 3899 - 973

This Quartz model from 1975 features a 42mm Hardlex-Coated Steel case. Powered by the 3899 caliber with 20j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-c658b8d82d80]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1975

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