These wireless headphones were designed on the Bluetooth® 5.0 platform, allowing them to communicate as low energy devices, providing a stronger signal for better stability and improved battery life up to 40 hours. Qualcomm aptX™ Sound Codec supports a truly wire-free listening experience, with robust connectivity when making calls and listening to music and an easier pairing experience. Kalimba Digital Signal Processing allows you to feel the movement and hear the amazing sound all around you. USB Type-C fast charging and a specialized battery charges 50% faster. In the rare case that your wireless headphones run out of power, a 15 minute quick charge will provide up to 6 hours of use. They also work in wired mode with the included cable.