【Invisible Sleep Earplugs】Invisible sleep earplugs are ear fitting and comfortable to wear, creating a gentle and relaxing environment for your ears, allowing you to enjoy music pleasantly while you sleep, effectively blocking external noise, allowing you to fall asleep more peacefully without any interference. 【Stable Connection, Low Latency】 The wireless sleep earbuds use Bluetooth 5.3 connectivity to provide seamless performance, making device connection easier and more stable. Enjoy uninterrupted high quality music to create a relaxing and cozy atmosphere for your sleep. 【Excellent Sound Quality】The sleep earbuds are based on the design concept of professional headphones, with built in high quality audio chip that captures every detail of the music and transmits rich, three dimensional surround sound with high treble and proper bass, presenting you with high quality listening effects. 【Long Battery Life】Up to 5 hours of listening time per earbud on a single charge. Charging your Bluetooth headphones in the charging case will give you a total of 24 hours of music playback. You can use the included Type C cable for charging. In addition, the built in dual LED power display clearly shows the battery level of both the headphone case and the wireless headphones. 【No Low Battery Alert Disturbance】The invisible sleep earbuds have no low battery alerts and are designed for sleeping. You won't be disturbed by annoying alerts, ensuring you sleep soundly all night long.