Seiko Cal. 6381 - 748

The Seiko 6381-748 represents an important milestone in Seiko's 1973 lineup. Powered by the 6381 caliber with 20j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-053a60b703c2]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1973

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