Seiko Cal. 4527 - 645

Released in 1973, the Cal. 4527 with design code 645 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-c28ab05cfe96]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1973

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