Seiko Cal. 6390 - 312

Seiko 6390-312

The 6390-312 is a sought-after Solar piece from Seiko's golden era. Powered by the 6390 caliber with 36j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-71cdab2a2b4c]

Also known as: Sportsmatic

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
14.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1986

Related Models

seikata-wm-71cdab2a2b4c