Seiko Cal. 4528 - 377

Seiko 4528-377

The 4528-377 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4528 caliber with 22j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-5fc39b544adb]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
39mm
Case Thickness
9.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Champagne
Jewels
22j
Frequency
36,000 bph
Power Reserve
66 hours
Year
1973

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