Seiko Cal. 4521 - 139

The Seiko 4521-139 represents an important milestone in Seiko's 1999 lineup. With its 19mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-4693817f907f]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1999

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