Seiko Cal. 0728 - 750

The Seiko 0728-750 represents an important milestone in Seiko's 1985 lineup. Powered by the 0728 caliber with 21j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-8086c912095f]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1985

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