This particular clock is easily recognizable by the number "70" printed on the dial in a small rectangle and the brand name Jaz under the 12 with the bird's tail in a downward position. The overall styling is very "Art Deco" with honeycomb hands, a 'skyscraper' styling, rectangular brass decorations on the front and the elongated dial face.
The movement is a quartz operated on a small battery. Quartz movements were not incorporated into clocks until the 1970's and basically meant the end of mechanical movements. In comparison to its predecessors, this clock is relatively very light in weight.