They work and sound great! Lasts up to 40 hours of listening time on one charge via USB-C. Don’t need to carry a different cable, uses same charging cable used to charge up iPad, MacBook, iPhone, etc. Supports Lossless & Spatial Audio with head tracking. Features both transparency and active noise cancellation modes. It can fold for easy carrying. Has built in Bluetooth for wireless connectivity. Has a built in controller on the right side headphone for pause/play, skip, answer calls. Is compatible with both Apple & Android devices. Original retail price is $349.99!