Adopting the latest Bluetooth 5.4 technology, power saving and connection stability have been significantly improved. It plays high-resolution sound sources equivalent to Hi-Res, including CD sources, compressed sound sources like MP3, and streaming services for music and videos. With high sound insulation that minimizes sound leakage, it is recommended for those who are particularly concerned about sound quality, such as for online classes, video conferences, and calls. 【Up to 38 Hours of Playback & Luxurious LED Display】 Equipped with an LED power indicator, it displays the battery level with luxurious numbers, allowing you to easily check the remaining battery. The LED light display is more stylish than the previous models. Thanks to the energy-saving design, the wireless earbuds alone can play for up to about 9 hours when fully charged. 【Excellent Fit】 Ergonomic design for a comfortable fit. The earphone body is ultra-small and lightweight, without any discomfort or pressure on the ears. It offers a comfortable and stable fit that won't fall out even during long hours of use, and your ears won't get tired. 【Pairing Recognition & Instant Connection】 After pairing with your smartphone for the first time, when you use it again, simply take the earphones out of the charging case, and they will automatically pair. You can also easily switch between single-ear and dual-ear use of the left and right headphones. With touch controls, you can simply tap with your finger to skip to the next/previous song, play/pause music, answer/end/reject calls, turn on/off the power, adjust the volume, and other basic operations. 【IPX7 Waterproof Performance & Wide Range of Applications】 The waterproof performance allows you to use it even if it suddenly rains during your commute or if you sweat during sports. Adopting the latest Bluetooth 5.4 technology, power saving and connection stability have been significantly improved. It achieves excellent connection stability regardless of the environment, maintaining a good balance between sound quality, low latency, and connection stability. 【Type-C Fast Charging】 The charging case uses a Type-C port, so the charging speed is significantly faster than the traditional USB. Even if you forget to charge, you can easily charge it while getting ready. You can charge it with a compatible charging adapter using the included Type-C cable. The numbers on the LED display clearly show from 0% to 100%, so you can easily see the remaining charge of the charging case and the charging status of the earphones anytime, anywhere!