Seiko Cal. 3877 - 991

This Automatic model from 1966 features a 44mm Two-Tone case. It features a Champagne dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-f19c3dce6a8b]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1966

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