1. Invisible earbuds are designed according to the shape of the ear, very mini design style, very light, fit the ear hook securely, suitable for long-term wear, will not cause discomfort to the ear.Very mini and invisible earbuds body design, if you like to sleep with earbuds and don't like the foreign body sensation in your ears when sleeping on your side, then these sleep earplugs are the best for you. 2.Sleep on your side without squeezing your ears, and the U-shaped rubber skin-friendly ear caps make the earphones fit your ears all nightThis hidden earbuds for work is very easy to use. With a built-in microphone, you can easily switch between pausing music, answering calls, rejecting calls, or tracking music with the touch of a finger without taking out your phone. All things become easier and easier 3.SENSE-FREE TO WEAR - These are the lightest earbuds,size within 1cm/0.4in weighing only 0.08 oz per sleep earbud. It feels so light and natural, you hardly notice its presence 4.DOUBLE NOISE CANCELLING TECHNOLOGY - Excellent physical noise cancelling combined with acoustic noise cancelling technology, you can enjoy a quiet sleep time with sleeping earbuds. Stay away from snoring and baby noise 5.24H LONG BATTERY LIFE & FAST CHARGING - The sleep earbuds last for 24 hours of listening to songs, and the stylish charging case can extend the usage time to 480 hours, which means the charging case can provide 7 times for extra charging power for invisible earbuds. Micro fast charging, it only takes 10 minutes to charge and 91 minutes to listen to songs 6.PREMIUM SOUND QUALITY & SAFETY GUARANTEE - This sleeping earbus bring you high-quality audio enjoyment. Whale cavity stereo surround sound, immersive music enjoyment. The perfect sleep companion. If you encounter any problem in use, please feel free to contact us, we will solve it for you within 25 hours.Bluetooth 5.3 and Fast ConnectionHigh-quality 5. Bluetooth chipset invisible bluetooth earbuds provides high-speed and stable connection, stronger signal, faster connection speed, compatible with almost all Bluetooth-enabled devices, up to 15 meters away. Simple and fast connection, enter the music world within 2 seconds 7.Specification:Bluetooth Version: 5.3Transmission Distance: about 15MStandby time480 hoursCharging Time: 1 hoursPlay Time with Charging Case: 24 hoursSupport system: all devices and mobile phones that support BluetoothNotes:1. Please read the instruction manual carefully before use.2. If you receive a defective product or have any questions during use, please feel free to contact us.Packing List:1 * Wireless Mini Earbuds1 * USB Cable1 * User Manual