The Original Sleep Sound Generator - Single Frequency.

This compact device produces a gentle whooshing noise that helps block intermittent or continuous annoying sounds such as traffic, ticking clocks, and footsteps so you can relax and fall asleep easily. Ideal for use in a baby's room to provide a soothing atmosphere, it can also be used in the office to mask distracting sounds for professionals and students who require a quieter environment for concentration. High-impact plastic case has a perforated top and side which can be adjusted for soft and amplified settings, and a rocker switch lets you select two frequency levels. Plugs into AC. 3 1/2" H x 6 5/8" Diam. (1 1/2 lbs.)