About this item Customized Sound: Choose from 22 preset EQs in the souridcore app and customize the tap controls. Use soundcore's signature BassUp preset to boost your bass. Long Playtime and Fast Charging: Get 9 hours of playtime on asingle charge that extends to 28 hours with the charging case. Charge soundcore A20i true wireless earbbuds for 10 minutes for an extra 2 hours of playtime, so you can charge on the go. Designed for Portability: soundcore A20i true wireless earbuds are small and lightweight with a compact case. It also comes with a lanyard, so you don't have to worry abcbut space in your bag or pockets. Al-Enhanced Clear Calls: An Al algorithm and 2 built-in microphhones ensure that your voice is always heard clearly on calls, no matter how noisy your surroundings are. Lightweight and Comfortable: Enjoy extended listening sessions and exceptional comfort due to the ergonomic and lightweight design of A20i true wireless earbuds. Easy and Stable Connection: After easy first-time pairing, tihe earbuds automatically connect to the last paired device when you take them out of the case. The earbuds also use Bluetooth 5.3, for a fast and stable connection.