Seiko Cal. 6240 - 740

The 6240-740 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6240 caliber with 20j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-ecce0af4e841]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1966

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