Seiko Cal. 6140 - 728

The 6140-728 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6140 caliber with 26j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-f88b03737a8c]

Also known as: Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1985

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