The JBL LIVE 400BT are wireless on-ear headphones that are seamlessly integrated with Google Assistant or Amazon Alexa. In the JBL application, you can select which voice assistant you want to use. This allows you to control your smartphone with voice commands. You can, for instance, ask the voice assistant to play your favorite playlist, meaning you can simply keep your phone in your pocket. When you turn on the Ambient Aware function, you can still hear ambient noise. This way, you'll be more aware of your surroundings and you won't miss any important announcements on the train. Thanks to the quick charge function, you'll never have an empty battery. After 15 minutes of charging, you can listen to music for another 2 hours.