Seiko Cal. 7142 - 837

Seiko 7142-837

The Seiko 7142-837 represents an important milestone in Seiko's 1989 lineup. Powered by the 7142 caliber with 36j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-fc01b039074c]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
42mm
Case Thickness
14.5mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1989

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