Seiko Cal. 4420 - 960

Seiko 4420-960

The 4420-960 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4420 caliber with 18j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-f32121b094cb]

Also known as: Tuna, UFO

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
15.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Silver
Jewels
18j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1968

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