Seiko Cal. 4421 - 553

The 4421-553 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-a96efd749229]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1976

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