Seiko Cal. 0722 - 640

Released in 1974, the Cal. 0722 with design code 640 was part of Seiko's domestic market collection. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-458e5a8fc0ad]

Also known as: Sumo, Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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