Invisible IPX5 waterproof and designed for sleeping: invisible ear plugs are designed according to the shape of the ear, with the Cochlear anti-drop design, comfortable to wear, clean and hygienic when not in the ear, no feeling when lying on the side, especially designed for sleeping and will not make your ears uncomfortable. Very light and sits securely on the ear hook for long term wear._x000D_Easy touch operation: This hidden earphone for work is very easy to use. With a built-in microphone, you can easily pause between music, answer calls, reject calls or track music without removing your phone._x000D_Double noise technology: excellent physical noise cancellation combined with acoustic noise cancellation technology, you can enjoy a quiet sleep time with sleeping earphones._x000D_Without feeling to wearThese are the lightest earphones with a size of 1 cm / 0.4 inches and a weight of only 0.08 ounces per sleep earphone. It feels so light and natural that you barely notice it._x000D_Ultra long battery life: the charging time is 1 hour and the charging box can be played continuously for 24 hours. The ultra-long battery life is 480 hours and microfast charging. Built-in microphone, you don't need to take out your phone, just touch your finger, you can easily switch to pause music, answer calls, reject calls or track music. Everything is getting easier