Seiko Cal. 4528 - 771

Seiko 4528-771

This Hand-Winding model from 1972 features a 36mm Hardlex-Coated Steel case. Powered by the 4528 caliber with 20j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-11c6a4c069e6]

Also known as: Monster, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.5mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Burgundy
Jewels
20j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1972

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seikata-wm-11c6a4c069e6