**Sleep-promoting sound library:** This multifunctional white noise machine offers 28 high-quality natural sounds, including soothing white noise, gentle rain sounds, relaxing ocean waves, and a variety of other sounds. It creates a familiar and calm environment that helps newborns, infants, and the whole family fall asleep faster and relax better. **Intelligent sound detection:** As an essential device for newborns, this intelligent sleep aid is equipped with sound monitoring. It continuously detects ambient sound levels and automatically adjusts the volume to block out disturbing ambient sounds. This ensures that your child always has a quiet environment for sleep or relaxation. **Long battery life, energy-saving:** This portable sleep aid is conveniently designed and provides up to 36 hours of continuous playback on a single charge. It also has a timer function (15/30/60 minutes) for energy-saving operation. Combined with the baby's heartbeat and other soothing sounds, it helps establish a regular and healthy sleep rhythm, ensuring a consistent and easy bedtime. **Adjustable warm light:** A night light with three adjustable brightness levels creates the perfect atmosphere. Soft lighting combined with soothing sleep music or a gentle heartbeat creates a multi-sensory bedtime ritual that promotes comfort and calm. Bluetooth connectivity: This device is not only a white noise generator but also a multifunctional audio device that supports Bluetooth connectivity. You can wirelessly enjoy your own music or podcasts – perfect for adults to relax, meditate, or enjoy a private space at home or in the office.