Seiko Cal. 6390 - 877

Seiko 6390-877

The 6390-877 is a sought-after Solar piece from Seiko's golden era. Powered by the 6390 caliber with 30j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-67e1f00c5201]

Also known as: Tuna, Emperor

Specifications

Movement
Solar
Case Material
Titanium
Case Width
42mm
Case Thickness
10.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Black
Jewels
30j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1970

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