Designed with the Qualcomm® aptX™ HD Sound Codec for a truly immersive experience. Enjoy listening to the finer details of your music or movies in high-definition sound with powerful bass and experience the subtle nuances of better than CD quality. Active Noise Cancelling virtually eliminates background noise and allows you to focus on what's important. Turn the ANC off when you need to hear what is happening around you. These wireless headphones were built 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. Engineered with USB Type-C charging port and specially formulated battery that supports two times faster charging. In the rare case that your wireless headphones run out of power, a 15-minute quick charge will provide up to five hours of use. The ear cushions were designed with a protein leather, sourced from Korea, to simulate the natural feel of leather on your skin. Plush memory foam inner cores were added, to surround your ears in comfort while providing noise isolation from ambient room noise. These wireless headphones work in both wireless and wired Mode with the included USB Type-C to 3.5 mm cable. In the rare event that you run out of power, they can be plugged in and will work in wired mode. An included Airplane adapter allows you to relax and listen in true stereo. These Synergy HD Wireless Over Ear Headphones were designed to work with Zoom, Microsoft Teams, Google Meet, WhatsApp, WebEx, WeChat, Skype and a myriad of conference call applications, so you can connect with your customers or associates and communicate clearly.Package Includes: 3.5 mm Adapter Cable for Wired Mode; USB Type C Charging Cable; Travel Case; Users Manual; Warranty Information