Ultra-long Battery Life Listen for up to 9 hours on a single charge, and extra 20 hours with the charging case that supplies 2 recharges, enjoy your fav music with your wireless earbuds on the go. Freely Use Either Earbud With role switching technology, either earbud supports a strong connection independently to your Bluetooth device for convenient pick-up and listen. Stable Bluetooth 5.0 Allows you to answer calls, change music tracks, or carry out any other operations anytime you want with the Bluetooth headphones. Open to Pair Open the lid, two earbuds will connect to each other automatically; simply connect the Bluetooth earphones of “TAOTRONICS SoundLiberty 97” to your device for using. IPX5 Waterproof Listen uninterruptedly no matter when running or dancing sweat and rain with TaoTronics wireless earbuds, and even clean under the tap. Secure & Comfortable Fit Ergonomically designed in-Ear headsets can fit in and stay secure, and allow for all-day comfy wear with 4 sizes of ear tips suitable for different ear canal shapes.