Seiko Cal. 4521 - 687

The Seiko 4521-687 represents an important milestone in Seiko's 1969 lineup. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-2cd9d8c637ed]

Also known as: Pogue, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1969

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