Seiko Cal. 4487 - 420

The 4487-420 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-42c463e8c630]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1988

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