Innovative bone conduction for exclusive and uninterrupted sleep Using advanced bone conduction technology, sound is transmitted through the pillow so only you can hear it. No headphones or external speakers needed, allowing you to enjoy a truly peaceful night. Ten white noises and Bluetooth 5.4 Builtin 10 natural, soothing sounds (including rain and running water) to help you relax and fall asleep quickly. Bluetooth 5.4 provides a stable connection to your phone for listening to any audio content as you prefer. Ultralong battery life A large capacity battery supports up to 8 hours of continuous playback. A convenient timer automatically stops playback after each sleep session, saving energy and helping you maintain a restful night. TF card local playback In addition to Bluetooth 5.4, it also supports TF card expansion playback, so you can use it without a phone. You need to supply your own TF card. Weighing only 54 g, it is lightweight and compact, making it suitable for home use and travel as your portable sleeping companion. Key specifications and features Weight: 54 g Connectivity: Bluetooth 5.4 Local playback: TF card supported (card not included) Battery life: up to 8 hours Builtin sounds: 10 natural sounds (eg. rain, running water) Sleep timer: autostop after each session Use scenarios At home with a partner: enjoy private audio without disturbing others. While traveling: use in hotel rooms or during flights, with or without a phone. Quiet relaxation or napping: switch between sounds to promote relaxation, focus, or a quick power nap.