Seiko Cal. 4440 - 380

Seiko 4440-380

The 4440-380 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-360f787731fe]

Also known as: Tuna

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
9.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1967

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