The Sound+Sleep Aquarius Sleep Sound System provides high-quality, natural sound compositions to help you relax and treat your body to a night of deep, restorative sleep. Choose from 10 distinct sound profiles, each with three levels of richness to a total of 30 different sound profiles, all of which have been scientifically engineered to promote a night of deeper sleep, relaxation, and renewal. Sound+Sleep uses magnificent, naturally recorded, high-definition sounds that are up to 30 minutes in length, eliminating all audio repetition for natural real-world sound environments. It’s AC-powered for home use and has a 3" high-fidelity speaker for lush, detailed sound. Adaptive Sound Technology The patented Adaptive Sound technology constantly monitors your environment and adjusts to reduce interference from unwanted noises. With “Adaptive” mode on you get a smart machine giving you the best volume experience.