Seiko Cal. 4427 - 428

Seiko 4427-428

The 4427-428 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-6197d0653b70]

Also known as: Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
46mm
Case Thickness
10.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
110m
Dial Color
Green
Jewels
32j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1974

Related Models

seikata-wm-6197d0653b70