Seiko Cal. 4580 - 442

The 4580-442 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-a96558ec4b8f]

Also known as: Sumo, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1978

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