Features 1. A variety of soothing audio sources, high-quality sound sources that meet different populations, unique acoustic principles, and interior design allow us to fully release our body and mind as if we were in the real world. 2. Improving work efficiency: White noise not only promotes sleep, but also covers the interference of external noise, helping us focus our attention in learning and work. 3. Intelligent timing: timed for 15 minutes, with a red LED on; Timer for 30 minutes, green LED on; Set a time of 60 minutes and the blue LED will light up. 4. Music and lighting: 18 music sources, combined with colorful night lights and ambient lighting with a hundred noise tones, the brightness of the lights changes with the breathing rhythm to aid sleep and facilitate nighttime use. 5. Convenient to carry: Convenient to wear ropes and hang on the bedside and stroller, compact and convenient to easily fit into a backpack or suitcase. Specification Material: Silica Gel+ABS Color: White Size: 8 x 4 x 4 cm Weight: 100 g Package Include: 1x Sleep Apparatus