Portable white noise + Nightlight 2-in-1 sleeping machine helps baby and adult fall and stay asleep. White noise is a sound frequencies within the range that make human relaxed, sound machine for sleeping and baby soother. COMSYNC sound machine for baby and adult,use white noise in your office, study, classroom, hotel room or home to minimize outside distractions so you can focus on the task at hand. Easy to Fall Asleep, COMSYNC sound machine can create a high-quality sleep environment for you, and the soothing sound can make you quickly enter a comfortable deep sleep state. Selectable Sounds and Volumes: Choose from 12 soothing sounds and 6 volume levels to create baby, or your favoritesleep environment. 12 sounds: white noise, pink noise, cat purring, lullaby,radio, fans, sea wave, rain, wind, flame sound, frogs and crikets,there is always a sleeping soundthat suits you and your baby. Better Sleep for Baby, COMSYNC white noise can recreate the sounds in the mother's womb, allowing the baby to calm down faster and fall asleep more easily. Longer lasting rechargeable battery reduce charging effort and keep play for weeks, not days.