Seiko Cal. 6381 - 271

This Automatic model from 1977 features a 38mm Titanium case. Powered by the 6381 caliber with 34j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-1908dd053467]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1977

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