Seiko Cal. 7139 - 728

Seiko 7139-728

The 7139-728 is a sought-after Quartz piece from Seiko's golden era. Powered by the 7139 caliber with 28j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-e55d8b5d801b]

Also known as: Rally, Silverwave

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
10.1mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
120m
Dial Color
Black
Jewels
28j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1986

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