Bluetooth 5.3 The earbuds utilize Bluetooth 5.3 technology, providing a stable and efficient wireless connection to your device. Customized Sound The Soundcore app allows you to customize the sound profile of the earbuds according to your preferences. You can adjust the equalizer settings, create personalized sound profiles, and tailor the audio experience to your liking. 28-Hour Long Playtime The earbuds come with a long-lasting battery that provides up to 28 hours of playtime. This means you can enjoy your music or podcasts throughout the day without worrying about frequent recharging. Water-Resistant The earbuds have a water-resistant design, making them resistant to sweat and light rain. This feature ensures that the earbuds can withstand your active lifestyle and are suitable for workouts or outdoor activities. 2 Mics for AI Clear Calls The earbuds are equipped with two built-in microphones that enable clear and high-quality phone calls. These microphones utilize AI technology to reduce background noise and enhance call clarity, ensuring your voice is heard clearly on the other end. Single Earbud Mode The A20i earbuds support single earbud mode, allowing you to use either the left or right earbud independently. This feature is useful when you want to stay aware of your surroundings or when you only need to use one earbud at a time.