Seiko Cal. 4487 - 731

The 4487-731 is a sought-after Solar piece from Seiko's golden era. Powered by the 4487 caliber with 36j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-938a533bb8ae]

Also known as: Panda, Navigator

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1992

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