Seiko Cal. 4420 - 240

Seiko 4420-240

The Seiko 4420-240 represents an important milestone in Seiko's 1968 lineup. Powered by the 4420 caliber with 27j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-1ea5e5eae32a]

Also known as: Turtle, Sea Horse

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
13.5mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Champagne
Jewels
27j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1968

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