Seiko Cal. 4520 - 772

Released in 1973, the Cal. 4520 with design code 772 was part of Seiko's domestic market collection. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-db57eb696f3b]

Also known as: Tuna, Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1973

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