【Wireless Charging & 48hrs Play Time】These bluetooth headphones charging case supports both wireless charging and USB C charging. You could choose either of these two charging methods at any time for your convenience. The impressive 9 hours of listening time on a single charge for the sports wireless headphones are extended to a remarkable 48hrs of play time with the included charging case. | 【Bluetooth and Stereo Sound Quality】 bluetooth earbuds adopt bluetooth technology, which can offer a clear and smooth connection, allowing you to hear crystal clear calls like you are communicating face to face with others. Don't worry about interruptions on listing to music and calling. | 【Multiple Smart LED Digital Display】With the smart LED digital power display of this wireless earbuds, you could check the remaining battery level and charging process of both earbuds and charging case at a glace even without opening the case lid. The percentage in the middle indicates the battery level of charging case, and the battery icons on both sides indicate the remaining battery of the left and right earbud respectively. Therefor you'd never worry about a sudden low battery alert. | 【HD Stereo Sound and Clear Calls】 The speakers inside the Q53 Bluetooth headphones have been engineered to maximize sound output and minimize sound loss, which means you get high-quality audio. The custom-designed 10 mm speaker drivers help make music sound powerful, yet nuanced. Use intelligent microphone noise cancellation to escape into your music at a moment’s notice, even in a noisy crowd. | 【Designed for Sports】Sport headphones to keep you motivated, a secure fit that won’t shift or fall out during long hours of training, and no wires to hold you back. Equipped with 3 pairs of ear caps and flexible earhooks, which can stay on your ears and get a suitable fitting. So that you will not feel tired and pain when wearing it for a long time. bluetooth earphones can fit for camping, running, or working out, even on a rainy day.