Seiko Cal. 6378 - 731

The Seiko 6378-731 represents an important milestone in Seiko's 1995 lineup. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-7fae2b4bcb40]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1995

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