Seiko Cal. 0721 - 884

Released in 1967, the Cal. 0721 with design code 884 was part of Seiko's domestic market collection. With its 20mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-12ea71eb42cb]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1967

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