40 Soothing Sounds for Adults: Perfect as a sound machine for sleeping, this white noise machine offers 10 nature tracks, 10 baby lullabies, 10 ambient noises, and 10 fan sounds. Block disruptions and create a peaceful sleep environment tailored for adults and babies and kids. Auto-Memory White Noise Machine: The sleep sound machine for adults remembers your last used light, sound, and volume settings no nightly reset needed. Just press play and drift off effortlessly. 8 Relaxing Light Modes: Ideal for a white noise machine for sleeping, choose from 2 warm tones, 5 calming colors, or a gentle gradient, you can use it as a feeding light and night light. Smart Timer & Precise Volume: Set the sound machine for sleeping adults to play for 45min, 90min, 8hrs, or nonstop.