Hammacher Schlemmer The Authentic Sleep Sound Machine This device produces a soothing white noise sound that helps block distracting noise. The sound machine masks noise from ticking clocks, traffic, or coworkers, creating an environment that is more conducive to concentration, relaxation, or sleep. Ideal for use in a baby’s room to create a soothing atmosphere, the compact device sets up unobtrusively on a desktop or nightstand and its volume, tone, and dual speeds are adjustable. Plugs into AC. 3 1/2" H x 5 1/2" Diam. (Weight 1 .5 lbs.)