Seiko Cal. 7163 - 857

The Seiko 7163-857 represents an important milestone in Seiko's 1973 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-d5939d2293ac]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1973

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