Seiko Cal. 5653 - 728

This Solar model from 1978 features a 44mm PVD Black case. With its 22mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-8b2523ab87bf]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1978

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