Seiko Cal. 6140 - 667

The 6140-667 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 69 hours power reserve. [seikata-wm-f0690c5917ff]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1988

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