Seiko Cal. 7163 - 787

The Seiko 7163-787 represents an important milestone in Seiko's 1982 lineup. Powered by the 7163 caliber with 23j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-6121bc40c3c4]

Also known as: Tuna, Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1982

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