Seiko Cal. 6140 - 340

The 6140-340 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6140 caliber with 19j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-88a910f7fa4a]

Also known as: UFO, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1977

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