Seiko Cal. 3872 - 557

The Seiko 3872-557 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-a98d4379f6ee]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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