Seiko Cal. 6653 - 635

The 6653-635 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6653 caliber with 28j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-2b20f6792958]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1975

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