In-ear headphones come with a universal GoFit Wing to ensure a comfortable and secure fit Bluetooth 5.2 technology provides a truly wireless connection to your device so you're free from the tangle of cords 10mm drivers deliver an incredibly rich sound so all your music comes through the way it was intended Built-in microphone enables hands-free calling and provides access to both Siri and the Google Assistant Battery delivers up to 9 hours of play time with an additional two charges in the included case