Seiko Cal. 7139 - 220

Seiko 7139-220

The 7139-220 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7139 caliber with 31j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-54a5a668db66]

Also known as: Navigator, Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
9.4mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
White
Jewels
31j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1980

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