Seiko Cal. 3878 - 734

The 3878-734 is a sought-after Automatic piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-826a47930bca]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1987

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