Seiko Cal. 7138 - 680

Seiko 7138-680

Released in 1978, the Cal. 7138 with design code 680 was part of Seiko's domestic market collection. Powered by the 7138 caliber with 25j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-aba3104d5a70]

Also known as: Monster, UFO

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
200m
Dial Color
Cream
Jewels
25j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1978

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seikata-wm-aba3104d5a70