Seiko Cal. 4521 - 772

Seiko 4521-772

The 4521-772 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-e6a6378805e9]

Also known as: Bullhead

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
44mm
Case Thickness
11.4mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
150m
Dial Color
Green
Jewels
21j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1966

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