Seiko Cal. 6240 - 742

Seiko 6240-742

The 6240-742 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6240 caliber with 34j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-a284e6c239bd]

Also known as: Turtle, Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
9.6mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1979

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seikata-wm-a284e6c239bd