Seiko Cal. 4425 - 540

Seiko 4425-540

The 4425-540 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-6a1b5ab93373]

Also known as: Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
38mm
Case Thickness
11.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1973

Related Models

seikata-wm-6a1b5ab93373