Seiko Cal. 3870 - 978

Seiko 3870-978

The Seiko 3870-978 represents an important milestone in Seiko's 1990 lineup. Powered by the 3870 caliber with 35j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-80920a796acb]

Also known as: Helmet, UFO

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
11.6mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
35j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1990

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seikata-wm-80920a796acb