Seiko Cal. 4423 - 570

The Seiko 4423-570 represents an important milestone in Seiko's 1988 lineup. Powered by the 4423 caliber with 29j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-b5d4b5008a43]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1988

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