Seiko Cal. 4428 - 342

Seiko 4428-342

The 4428-342 is a sought-after Solar piece from Seiko's golden era. Powered by the 4428 caliber with 35j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-d90c10f2f443]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
10.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
35j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1981

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