Seiko Cal. 6140 - 737

Seiko 6140-737

The 6140-737 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6140 caliber with 35j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-075e624c7e5f]

Also known as: Tuna, Silverwave

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
43mm
Case Thickness
13.7mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Cream
Jewels
35j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1974

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