Seiko Cal. 6381 - 240

The Seiko 6381-240 represents an important milestone in Seiko's 1965 lineup. Powered by the 6381 caliber with 30j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-5fd527fca9cc]

Also known as: Sea Horse

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1965

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