Bluetooth 5.3 and 40 ms low latency: with the advanced Bluetooth 5.3 chip and the two-channel transmission, the Bluetooth headphones can provide a more stable and faster transmission speed, whether you are watching movies or playing games, you can enjoy 40 ms low latency and clear listening, enjoy sound effects and scenes. LED digital display and 40 hours playtime: the headphones with microphone have LED digital display, which can accurately show the remaining power of the charging case and headphones. After full charging, the earphones support 6 hours of continuous playback, and the charging case can provide an additional 35 hours of playback time for the Bluetooth earphones. With USB-C fast charging, full charging takes only 1.5 hours.