Battery: The white noise machine is rechargeable: 2.5 hours charging time for more than 9 hours of use. Ideal to replace the old version, it is risk-free. Perfect for adults, families and children at bedtime 8 night lights: Help your baby sleep well à fall asleep with soft light and soothing sound. The night light provides security when moving to the large room. Eight lighting modes and high fidelity sound calm emotions and reduce crying Timer and memory: This machine features white noise promotes sleep. The timer turns on or off after 30, 60 or 90 minutes. It remembers the light, sound and volume settings. Ideal for adults and babies 29 sleep sounds: This white noise sleep machine offers 7 white noises, 7 fan sounds and 15 relaxing nature sounds (birds, waves, rain, etc.). Enjoy high-quality sound to fall asleep faster and wake up refreshed in the morning Hide noise and protect your privacy: The coffee machine; White noise effectively masks noise to improve your comfort. Use the