Seiko Cal. 0766 - 312

The 0766-312 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0766 caliber with 30j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-3acee1db3902]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1973

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