Seiko Cal. 4520 - 377

Seiko 4520-377

The 4520-377 is a sought-after Solar piece from Seiko's golden era. Powered by the 4520 caliber with 28j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-828af6d5d9e4]

Also known as: Silverwave

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
10.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
150m
Dial Color
Cream
Jewels
28j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1987

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