Seiko Cal. 3877 - 442

This Spring Drive model from 1966 features a 40mm Stainless Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-54df1b3a4cbe]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1966

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