Seiko Cal. 4487 - 739

The Seiko 4487-739 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-900c5cbe6d47]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1983

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