They offer up to 18 hours of earbud battery life. The case is the smallest Beats has made, but it does not contain a battery for recharging on the go; the earbuds must be plugged in via the case to charge. The earbuds feature a custom acoustic architecture for a balanced sound with detailed clarity and powerful bass. They use Bluetooth 5.3 technology and are compatible with both Apple and Android devices. They are designed with physical buttons on each bud for controls like play, pause, and volume adjustment.