Seiko Cal. 0721 - 278

The 0721-278 is a sought-after Automatic piece from Seiko's golden era. Powered by the 0721 caliber with 17j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-52fb09466298]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1978

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