Seiko Cal. 0731 - 235

The Seiko 0731-235 represents an important milestone in Seiko's 1968 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-a76511447a4c]

Also known as: Tuna, Emperor

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1968

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