Seiko Cal. 7138 - 725

Seiko 7138-725

The Seiko 7138-725 represents an important milestone in Seiko's 1980 lineup. Powered by the 7138 caliber with 20j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-5b3255d5df24]

Also known as: Helmet, Rally

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
46mm
Case Thickness
15.2mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
150m
Dial Color
Champagne
Jewels
20j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1980

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