Seiko Cal. 6381 - 740

The Seiko 6381-740 represents an important milestone in Seiko's 1972 lineup. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-2947c088c694]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1972

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