Seiko Cal. 3877 - 870

This Automatic model from 1977 features a 39mm Stainless Steel case. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-519952435098]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1977

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