Seiko Cal. 7140 - 399

The 7140-399 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7140 caliber with 28j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-e159234f1e8e]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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