Seiko Cal. 4521 - 680

The 4521-680 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-30613bf9bb2b]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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