STEREO SOUND & SECURE FIT Compact and ultra-lightweight, these cordless bluetooth earbuds are perfect for work, workout, sports and gaming. The in-ear earphones are ergonomically designed to fit snug into ears. The earbuds also include 3 sizes (large, medium, small) of soft, flexible ear tips to ensure a comfortable and secure fit.ONE-STEP PARING TECHNOLOGY Pick up the two headsets from the charging case, you can seamlessly pair this device to your Bluetooth devices automatically. You dont need any skills to use Bluetooth earbuds. In a couple of seconds, you will be in your euphonic music world.NOISE CANCELLATION FUNCTION A20 wireless earbuds automatically turn on the call noise reduction function during a call. Reduce noise to provide the clearer and better calls for you. And ear caps prevent 90% noise going to ear canal.TOUCH CONTROL & WIDE COMPATIBILITY Easily take out to connect and lightly touch to control music and calls. A20 earphones is widely compatible with smart phone and other Bluetooth-enabled devices with Android, iOS system.