Seiko Cal. 4420 - 718

Seiko 4420-718

The 4420-718 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-5f108504a554]

Also known as: Sumo, Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
38mm
Case Thickness
12.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Black
Jewels
27j
Frequency
36,000 bph
Power Reserve
66 hours
Year
1970

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