SLEEP SLEEP ALL NIGHT: Invisible sleep headphones have multiple functions to close the ear canal and block out unwanted noise, allowing you to sleep soundly. (Note: N6 sleep headphones do not have active noise-canceling characters) COMFORTABLE TO WEAR: No more worrying about your sleep earbuds falling out! Compact, comfortable and wireless, the sleep headset is an indispensable helper in your daily life! Ideal for Side Sleeping:These sleeping ear plugs are made of ultra-soft material and ergonomic design to ensure pressure-free comfort even when sleeping on your side. MORE STABLE CONNECTION: The ear plugs for sleeping noise cancelling compose the perfect soundtrack to your sleep with a stable Bluetooth 5.3 connection. Outstanding Playback Time: Our sleeping earbuds have an advanced built-in rechargeable battery that lasts up to 4 hours, and up to 40 hours with the charging case GREAT FOR SIDE SLEEPERS These Sleep Headphone utilize the combined efforts of ultra-soft material and ergonomic design to ensure pressure-free comfort even when you sleep on your side