In-ear buds feature an ergonomic bud design that feels comfortable in your ears Bluetooth 5.2 connectivity lets you stream wirelessly from phones, tablets, or any other Bluetooth-enabled device 8mm drivers deliver JBL Deep Bass sound for high-quality listening Smart Ambient technology lets you adjust the audio input to keep you aware of your surroundings JBL app makes it easy to adjust your sound settings and more Built-in microphone enables hands-free calls, with VoiceAware technology to balance how much of your own voice you hear IP54 water and dust resistant construction lets you wear the headphones outdoors without worrying about damage Eight hours of earbud battery life and 24 hours in the case allow you to listen all day Speed charge setting lets you gain an extra two hours of battery life with just ten minutes of charging