Seiko Cal. 4520 - 390

Released in 1975, the Cal. 4520 with design code 390 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-419169dd2015]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1975

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