Seiko Cal. 3878 - 648

The Seiko 3878-648 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-a936807195d1]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1991

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