Seiko Cal. 0721 - 945

The 0721-945 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-7b8e7a95ac95]

Also known as: World Timer, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1967

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