Seiko Cal. 0784 - 664

Released in 1975, the Cal. 0784 with design code 664 was part of Seiko's domestic market collection. It features a Navy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-9be7d7fe73bf]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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