Seiko Cal. 0768 - 311

The Seiko 0768-311 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-80ee7cb7c905]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1968

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