Seiko Cal. 0728 - 654

The 0728-654 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0728 caliber with 27j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-4857711626cc]

Also known as: Sportsmatic, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1969

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