Seiko Cal. 4478 - 840

Seiko 4478-840

The 4478-840 is a sought-after Automatic piece from Seiko's golden era. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-fcd94c33b0f3]

Also known as: Silverwave, Bellmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
41mm
Case Thickness
15.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1972

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