Loved by generations since 1962, the Dohm Uno features our signature fan-based natural white noise Our single-speed model features adjustable tone and volume to create a personalized sound environment, excellently masking noise for better sleep Assembled for decades in the USA and backed by a one-year limited warranty Powered by a 8 foot 120V AC plug, just plug it in, flip the switch on, then rotate the cap and collar to find the best sound for you Uno features a sleek and simple design; fits anywhere and blends unobtrusively into surroundings