Bone Conduction: The pillow speaker uses advanced bone conduction technology, allowing bone conduction oscillators to deliver music through the pillow, eliminating the need for earbuds and protecting your ears. Long Working Time & Fast Charging: The mini bone conduction speaker can work continuously for 20 hours, fully charged in about 3 hours (comes with a Type-C USB cable), providing you with a more continuous and comfortable music experience. Better Sleep: The under-pillow speaker is customized to relieve insomnia. You can adjust the volume on your phone according to your habits and listen privately without disturbing others. Tip: Place it in the center of the pillow and sleep on your side for a better night's sleep. Two Modes & Timer Setting: The pillow speaker bone conduction stereo has two connection modes, supporting Bluetooth and white noise. You can choose the mode according to your needs. With the timer function, you can set the time before falling asleep. Mini & Portable: The pillow speaker is only 60 grams (15.5*3.5*1.3 cm), which is convenient for you to travel or carry with you. It can also provide you with a good sleeping environment.