<br>Bluetooth Connection or TF card: Under pillow speaker conveniently connects to cell phones, tablets and other devices to enjoy premium music at any time. Enjoy premium music playback at your convenience, and enjoy the relax that Wire less connection brings!Or you can use a TF card to enjoy a personalized song experienceInnovative Technology: Under pillow speaker uses bone conduction technology, which is safer and healthier unlike traditional speakers. Our Pillow Speaker deliver soothing white noise directly to your ears without the need for earplugs,promoting better sleep quality without straining your ears.Thoughtful design: timed shutdown to avoid unnecessary power waste, while also giving your ears a break during sleep time. There is also a long battery life, giving you a variety of options to listen to musicScreen display: compared to other speakers, this sleep audio has LED screen design, you can clearly understand the current state of the speaker, more convenient to use the product10 SOOTHING SOUNDS: 10 Sounds of Nature, no matter where you arechoose from white noise, nature sounds, and lullabies, then set your volume anywhere from whisper-quiet to impressively robust.<br>