Seiko Cal. 6381 - 718

The Seiko 6381-718 represents an important milestone in Seiko's 1972 lineup. Powered by the 6381 caliber with 32j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-90675cf1e83d]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1972

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