Seiko Cal. 3877 - 749

Seiko 3877-749

This Automatic model from 1973 features a 35mm PVD Black case. Powered by the 3877 caliber with 27j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-472a229691bf]

Also known as: Helmet

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
35mm
Case Thickness
8.6mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
160m
Dial Color
Navy
Jewels
27j
Frequency
28,800 bph
Power Reserve
72 hours
Year
1973

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