Seiko Cal. 0727 - 318

The Seiko 0727-318 represents an important milestone in Seiko's 1979 lineup. Powered by the 0727 caliber with 33j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-e275b2821ad3]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1979

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