Seiko Cal. 6140 - 637

The 6140-637 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6140 caliber with 20j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-6306346f02e0]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1966

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