Seiko Cal. 4565 - 637

The Seiko 4565-637 represents an important milestone in Seiko's 1982 lineup. Powered by the 4565 caliber with 30j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-be82a6321b4a]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1982

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