【Latest Bluetooth 5.4 and High-Fidelity Sound】 With the innovative Bluetooth 5.4 high-performance chip, the delay in wireless audio can be shortened, enabling fast pairing and stable connections without worrying about interruptions. Advanced antenna technology provides fast and stable transmission within a 15m Bluetooth range. 【Superior ENC Noise Reduction】 These wireless headphones feature dual 14.2mm low-distortion composite dynamic drivers with a built-in high-resolution decoder and AAC & SBC audio coding technology. Equipped with ENC noise-canceling function, they can eliminate noise during calls. You can enjoy an excellent call experience and immediately feel the stress-relieving effect of listening to pure music. 【40-Hour Playback & Clear LED Display】 Thanks to the advanced Bluetooth chip and power-saving design, the earbuds alone can last for 6-8 hours on a full charge, and up to 40 hours in total with the charging case. This eliminates the need for frequent charging, so you can use them with confidence for commuting, business trips, and conference calls without worrying about running out of battery. The LED display clearly shows the battery percentage from 0 to 100%. 【Comfortable Touch Control & IPX7 Waterproof】 Simple touch controls allow you to perform basic operations such as skipping/rewinding tracks, playing/pausing music, answering/ending/rejecting calls, turning the power on/off, adjusting the volume, and activating voice assistant. They also meet the waterproof standard (IPX7), making them ideal for use on rainy days or during sports. You can enjoy your music to the fullest without worry, even if you sweat at the gym or get splashed while hiking. 【Automatic Pairing & Type-C Fast Charging】 You only need to pair them manually for the first use. The next time, when you open the lid, they will automatically search for the connected device and are ready to use when taken out of the case. This eliminates the hassle of repeated pairing, making them convenient to use. Furthermore, they support Type-C fast charging, which provides about 1 hour of playback with a 10-minute charge and offers superior transfer speed and compatibility. The charging speed is significantly faster than the conventional Micro USB, making them highly responsive in situations where you suddenly need to use the earphones, such as when you're out and about or on a call.