Seiko Cal. 7031 - 689

Seiko 7031-689

The 7031-689 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7031 caliber with 25j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-d347682d7151]

Also known as: World Timer

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
37mm
Case Thickness
14.2mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
70m
Dial Color
Green
Jewels
25j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1979

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seikata-wm-d347682d7151