Seiko Cal. 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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