Seiko Cal. 3840 - 470

This Spring Drive model from 1971 features a 46mm Stainless Steel case. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-862b045be3c1]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1971

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