Hi-Fi Stereo Sound: Dual 40mm large-aperture driver units and Bluetooth 5.0 Tech provide more stable transmission speed, lower latency and better audio output. ?NOTE: It can ONLY be charged by 5V 1A/5V 2A charger. It needs a Bluetooth transmitter for TV without built-in Bluetooth? | Comfortable: Memory-protein ear cushion simulate human skin texture for lasting comfort. Adjustable slider and soft padded headband allow you to get the most comfortable enjoyment. [Warm Tip:please take off the headphone every 1-2 hrs to relax your ears] | Build-in Microphone and Control: A microphone is built into the headset which let you enjoy a completely hands free listening experience in high definition calls; Control your Music or answer/end phone calls right from your headset by build-in controls. | Ergonomic Design: To fit everybody’s head and ear perfectly, the headphones equips adjustable headhand and fits cushioned ear pads; Besides, it is very light and bring no burden for your head. Its foldable headband design can save desktop space for you. | Wired & Wireless 40H Playtime: High capacity rechargeable battery provides up to 40H playtime in wireless mode [NOTE: Playtime updated to 40H from 30H, Bluetooth updated to 5.0 from 4.1 on May.16,2019]. Audio cable provided for never power off listening.