Seiko Cal. 7139 - 490

Seiko 7139-490

The 7139-490 is a sought-after Quartz piece from Seiko's golden era. Powered by the 7139 caliber with 32j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-622b27ca1ae1]

Also known as: Sumo

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
34mm
Case Thickness
10.5mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Black
Jewels
32j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1965

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