Seiko Cal. 3878 - 775

The 3878-775 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-73a011ab88da]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1967

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