Seiko Cal. 4420 - 536

Seiko 4420-536

The Seiko 4420-536 represents an important milestone in Seiko's 1978 lineup. Powered by the 4420 caliber with 34j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-c398a476ac4c]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Solar
Case Material
Titanium
Case Width
39mm
Case Thickness
15.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Navy
Jewels
34j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1978

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