Latest Bluetooth 5.3 and High-Fidelity Sound Quality: This product is certified with the Technical Regulations Compliance Mark (Frequency band: 2.40-2.48GHz). Our wireless earbuds utilize advanced Bluetooth 5.3 technology and antenna technology, providing fast and stable transmission within a 15m Bluetooth range. The built-in high-quality audio chip captures every detail of the music, delivering clear highs and rich sound with moderate bass. With ENC call noise-canceling technology, ambient noise and echo are reduced, achieving clear Bluetooth earphone Hi-Fi sound. Highly recommended for everyday use, remote work teleconferences, and calls, especially for those who are particular about sound quality. Innovative Self-Connection Technology: Convenient pairing technology; after pairing with your smartphone for the first time, when you open the charging case upon restarting, it will automatically connect without any other operations. The design incorporates smart touch controls, allowing for stress-free touch operations, and enabling basic operations such as track forward/backward, music play/pause, call answer/end/reject, power on/off, and volume adjustment with simple touch controls. Type-C Fast Charging & 36-Hour Playback: With a total of up to 36 hours of use with the charging case, you don't have to worry about running out of battery during use. Equipped with a Type-C port for fast charging, charging is even faster. Even if the earbuds run out of battery, you can charge them for 10 minutes and get 2 hours of playback. (※ Playback time varies depending on volume, content being played, and usage environment.) The accuracy and sensitivity of the touch controls have also been significantly improved, allowing for stress-free touch control. Small and Exquisite, Convenient to Carry: The new wireless earbuds are small, delicate, and very compact, making them convenient to carry. The ergonomically designed earbuds are very compact and lightweight (approximately 4 grams). They fit snugly in the ear and do not cause discomfort or pressure. They won't easily fall out even with prolonged use, and ear fatigue is reduced. IPX7 Waterproof Performance and Excellent After-Sales Service: With IPX7 waterproof, splash-proof, and moisture-proof performance, they can be used even if they get wet from sudden rain or sweat during intense exercise. Applicable to all weather conditions.