Seiko Cal. 0728 - 575

The Seiko 0728-575 represents an important milestone in Seiko's 1979 lineup. Powered by the 0728 caliber with 21j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-213081091342]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1979

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