The built-in Microphone makes this perfect for video conferencing such as Zoom, Skype, Microsoft Teams and more. Inspired by classic designs from the '80s and '90s. Cassette features style, comfort, durability, and sound quality far beyond its price. Bluetooth® Wireless Technology. Up to 22 Hours of Battery Rapid Charge (10 minutes = 3 hours). Collapsible Design . Removable AUX Cable Plush On-Ear Cushions Pivoting Ear Cups Durable Metal Headband Microphone Call, Track, and Volume Control 2-Year Warranty