Seiko Cal. 4521 - 771

The 4521-771 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-983ae8a9628f]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1988

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