Seiko Cal. 4420 - 612

Seiko 4420-612

The 4420-612 is a sought-after Solar piece from Seiko's golden era. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-4bbecf1f5406]

Also known as: Sumo, Rally

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
44mm
Case Thickness
14.4mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Silver
Jewels
19j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1965

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