Seiko Cal. 6390 - 946

Seiko 6390-946

The 6390-946 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6390 caliber with 28j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-2c2a0457a028]

Also known as: Sportsmatic, Navigator

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
36mm
Case Thickness
12.8mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
White
Jewels
28j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1984

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