Invisible Sleeping EarplugsAny invisible earplugs can be used alone, this smallest earplug can be placed in your ear cleverly, perfect for hiding in your ear while working or sleeping.Designed for SleepThe sleeping earplugs combine proprietary skin-soft silicone earplugs and earplug caps, and the true wireless design provides you with a comfortable wearing experience all night long. They are perfect sleeping earplugs for side sleepers. Even if you toss and turn or sleep on your side, long-term wearing will not cause any pressure on your earsBluetooth 5.3Wide compatibility. 3D surround sound, 5.3 binaural chip, large capacity, Bluetooth 5.3 technology, easy to pair and connect with smartphones, free from cable constraints, stable connection, no delay.IPX6 WaterproofIPX6 professional deep waterproof supports swimming, surfing, snorkeling and other sports. You will enjoy clear, precise, dynamic sound and balanced audio underwater. But it cannot be used continuously underwater for more than 6 hours.Comfortable to WearNo need to put the earphones into the ear canal, even if you listen to music all day, your ears will not feel sore. A great choice for music lovers. Built-in noise-cancelling microphone makes calls clearer; whale cavity stereo surround sound technology makes the music experience higher quality.