Seiko Cal. 5618 - 381

The Seiko 5618-381 represents an important milestone in Seiko's 1966 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-f6638c448d27]

Also known as: Turtle, Rally

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1966

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