Seiko Cal. 6630 - 653

The Seiko 6630-653 represents an important milestone in Seiko's 1973 lineup. Powered by the 6630 caliber with 32j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-44a2e7bdfc65]

Also known as: Sumo, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

32j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1973

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