Seiko Cal. 7138 - 637

Seiko 7138-637

The 7138-637 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7138 caliber with 25j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-04d2409f9f44]

Also known as: Shogun, Arnie

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
34mm
Case Thickness
12.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Silver
Jewels
25j
Frequency
36,000 bph
Power Reserve
46 hours
Year
1990

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seikata-wm-04d2409f9f44