Seiko Cal. 3878 - 710

The Seiko 3878-710 represents an important milestone in Seiko's 1992 lineup. It features a Green dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-914390496b4f]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1992

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