Seiko Cal. 7139 - 279

Seiko 7139-279

The Seiko 7139-279 represents an important milestone in Seiko's 1991 lineup. Powered by the 7139 caliber with 31j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-148cc0e77886]

Also known as: Sumo, UFO

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
90m
Dial Color
Silver
Jewels
31j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1991

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