Seiko Cal. 7180 - 503

The Seiko 7180-503 represents an important milestone in Seiko's 1979 lineup. Powered by the 7180 caliber with 34j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-47dcdf33b9d4]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1979

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