Seiko Cal. 7027 - 390

Seiko 7027-390

The 7027-390 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7027 caliber with 18j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-2218617b9dfa]

Also known as: Navigator, Arnie

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
35mm
Case Thickness
15.2mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Champagne
Jewels
18j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1970

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