Seiko Cal. 0728 - 139

The 0728-139 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-0100ea42ce55]

Also known as: UFO, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1981

Related Models

• Seiko 5642-334
• Seiko 4532-976
• Seiko 5697-191
• Seiko 6385-326
• Seiko 6617-978
• Seiko 5683-842
• Seiko 5613-803
• Seiko 6219-791
• Seiko 6274-895
• Seiko 4497-915
• Seiko 6681-299
• Seiko 6134-150