Seiko Cal. 0740 - 421

The 0740-421 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0740 caliber with 26j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-3f6cd45b6015]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1978

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