Seiko Cal. 4420 - 737

Seiko 4420-737

The Seiko 4420-737 represents an important milestone in Seiko's 1983 lineup. Powered by the 4420 caliber with 23j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-a1fe61f76c62]

Also known as: Silverwave

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
10.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Cream
Jewels
23j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1983

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