Seiko Cal. 3870 - 724

The Seiko 3870-724 represents an important milestone in Seiko's 1974 lineup. Powered by the 3870 caliber with 19j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-2e7d1eb20cc0]

Also known as: Helmet, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1974

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