Seiko Cal. 7163 - 233

The Seiko 7163-233 represents an important milestone in Seiko's 1988 lineup. Powered by the 7163 caliber with 18j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-6dfb69b3390e]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1988

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