Seiko Cal. 4487 - 491

Seiko 4487-491

The 4487-491 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-413fbbdf143f]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.6mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Green
Jewels
34j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1972

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