Seiko Cal. 4420 - 694

Seiko 4420-694

The 4420-694 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4420 caliber with 30j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-7a6e60b5fa54]

Also known as: Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
39mm
Case Thickness
11.8mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
110m
Dial Color
Champagne
Jewels
30j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1969

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