Seiko Cal. 4427 - 528

Seiko 4427-528

The 4427-528 is a sought-after Solar piece from Seiko's golden era. Powered by the 4427 caliber with 21j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-145c0e22a9fd]

Also known as: Turtle

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
46mm
Case Thickness
12.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
100m
Dial Color
Black
Jewels
21j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1967

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