Seiko Cal. 7138 - 300

Seiko 7138-300

The 7138-300 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7138 caliber with 21j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-e256a1eafa58]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.1mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1983

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