Seiko Cal. 6390 - 391

Seiko 6390-391

The 6390-391 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3652cbbc6551]

Also known as: Sea Horse

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
13.9mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Green
Jewels
18j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1969

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