Seiko Cal. 6131 - 840

The 6131-840 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6131 caliber with 28j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-c9ccc1dae57e]

Also known as: Rally, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1966

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