Seiko Cal. 4520 - 364

Released in 1981, the Cal. 4520 with design code 364 was part of Seiko's domestic market collection. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-8ac77ae90aff]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1981

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