Seiko Cal. 4571 - 728

The Seiko 4571-728 represents an important milestone in Seiko's 1973 lineup. Powered by the 4571 caliber with 27j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-03d1ec5a1363]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1973

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