Seiko Cal. 4520 - 975

Seiko 4520-975

The 4520-975 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-01c11bccc634]

Also known as: Tuna, World Timer

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
14.0mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1981

Related Models

seikata-wm-01c11bccc634