Seiko Cal. 3878 - 636

The Seiko 3878-636 represents an important milestone in Seiko's 1997 lineup. It features a White dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-53f41de45cee]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1997

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