Seiko Cal. 4487 - 378

Seiko 4487-378

The 4487-378 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4487 caliber with 35j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-5797db62581e]

Also known as: Arnie

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
10.6mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
140m
Dial Color
Navy
Jewels
35j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1967

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