JBL Wireless Headset is Built-in Microphone, Voice Assistant integration, Flat-fold design, Hands Free Call, JBL Pure Bass Sound, JBL Pure Bass Sound, Rechargable battery(up to 50 hours of wireless listening and a two-hour charge) Remote control on ear cups, 40 mm Driver size , allows pairing the headphones to two different mobile devices at the same time and switch between them as you need, watch a video on your tablet, then switch to your smartphone when answering a call,