Seiko Cal. 3878 - 721

This Kinetic model from 1999 features a 36mm Two-Tone case. With its 21mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-f642547d8920]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1999

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