Ergonomic Sports Design and IP7 Waterproof: The running headphones are ergonomically designed and come with 3 different sizes of soft ear tips (S/M/L), which fit most ear canal contours. The earplugs will be very comfortable and not easy to fall off when worn. They'll also stay in place, whether through intense exercise or prolonged use. At the same time, wireless headphones has an IP7 waterproof rating, which can resist sweat, rain and minor water splashes, which is suitable for exercise, and running. | 3D Stereo Sound and Crystal Clear Calls: The wireless earbuds sport adopt SBC/AAC audio decoder and equipped with 13mm diaphragm speaker driver, which can provide a powerful and wide sound range, bringing crisp sound and deep bass. The noise cancelling earbuds are equipped with CVC8.0 noise reduction technology, which can monitor and suppress the noise in the surrounding environment in real time, allowing you to immerse yourself in a pure and clear music world and enjoy uninterrupted listening. | Bluetooth 5.3 and Seamless Pairing: Csasan bluetooth earbuds feature an advanced Bluetooth 5.3 chip for lightning-fast transmission, rock-solid connectivity, and an expansive range. Enjoy an unparalleled, silky-smooth music and call experience, from signal interruptions or audio degradation. After initial pairing, open the charging case to automatically connect the wireless earphones to your phone via Hall technology, simplifying the process and saving valuable time. | 48 Hrs Playtime and Dual LED Display: The bluetooth headphones can last up to 8 hours on a single full charge, and use the battery capacity charging case to recharge the over ear headphones an additional 4-5 times, so you can enjoy a total of 48 hrs of playtime. In addition, ear buds wireless bluetooth earbuds are also equipped with a smart LED display that can visually display the power level. The charging box supports USB-C charging and can be fully charged in 1.5 hours. | Smart Touch Control and Wide Compatibility: In-ear earbuds feature touch control sensors, allowing you to effortlessly play/pause music, answer/reject calls, adjust volume, and activate voice assistants with a gentle touch on workout headphones' surface. It's intuitive control at your fingertips. These earbuds with microphone are compatible with a wide range of Bluetooth-enabled devices,such as iOS, Android, etc... Perfect for meeting your daily needs and enhancing your convenience in life.