Seiko Cal. 0773 - 427

The 0773-427 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0773 caliber with 17j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-d451e13581e5]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1965

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