Seiko Cal. 0728 - 770

The 0728-770 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0728 caliber with 19j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-4e19dd83df34]

Also known as: Tuna, Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1997

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