Seiko Cal. 3828 - 687

Seiko 3828-687

This Spring Drive model from 1971 features a 45mm Hardlex-Coated Steel case. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-07015ccf7612]

Also known as: Tuna, Rally

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
11.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Green
Jewels
31j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1971

Related Models

seikata-wm-07015ccf7612