Seiko Cal. 6138 - 142

Seiko 6138-142

The 6138-142 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6138 caliber with 18j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-47e0852c381e]

Also known as: Monster, Sumo

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
46mm
Case Thickness
8.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
80m
Dial Color
White
Jewels
18j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1969

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