Seiko Cal. 6140 - 255

The 6140-255 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6140 caliber with 30j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-48bdd29c4a5e]

Also known as: Helmet, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1989

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