Seiko Cal. 0728 - 550

Seiko 0728-550

The Seiko 0728-550 represents an important milestone in Seiko's 1976 lineup. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-506e2b1a444d]

Also known as: Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.2mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Cream
Jewels
24j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1976

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