Seiko Cal. 4420 - 399

Seiko 4420-399

The 4420-399 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-cd57c905e462]

Also known as: UFO, Rally

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
40mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1973

Related Models

seikata-wm-cd57c905e462