Seiko Cal. 3878 - 731

Seiko 3878-731

This Kinetic model from 1976 features a 37mm Hardlex-Coated Steel case. With its 22mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-22741adccbd6]

Also known as: Helmet, Silverwave

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
9.2mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Navy
Jewels
23j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1976

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seikata-wm-22741adccbd6