Seiko Cal. 4568 - 728

The Seiko 4568-728 represents an important milestone in Seiko's 1975 lineup. Powered by the 4568 caliber with 23j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-b14bb6a147b2]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1975

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