Seiko Cal. 4521 - 631

The Seiko 4521-631 represents an important milestone in Seiko's 1981 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-ea390bb04773]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1981

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