Seiko Cal. 4487 - 607

The 4487-607 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4487 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-55cb2830aafd]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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