Seiko Cal. 7031 - 616

The Seiko 7031-616 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-cd3fe4b42f1a]

Also known as: World Timer, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1968

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