[Comfortable to Wear]: The flat design of the sleep earbuds is comfortable and easy to wear, only 0.4 feet thick, which can be hidden in the ears, and it will not be exposed when sleeping on your side, avoiding the feeling of pressing against the ears. [Extreme Sound Quality]: There is a 10MM titanium-plated composite vibration film hidden in the small sleep earbuds. The stable sound takes care of your sleep. The low-frequency sound range helps you fall asleep faster and sleep sweeter. [Bluetooth 5.0]: The sleep earbuds use a Bluetooth 5.0 chip, which provides you with a wider transmission range, a more stable signal, and a lower instantaneous delay. You don't need to carry your mobile phone with you when you go to the bathroom at bedtime, and it can also play your favorite songs or the sound of birds, rain, and waves. [Long Battery Life]: The sleep earbuds with the charging case can provide you with 24 hours of use time, whether you are sleeping or going out, you don't need to worry about battery issues all day.