Silicone Detachable Replaceable Earhook for Sports: The wireless sports earbuds are designed by ergonomically flexible and soft ear hooks with silicone earcaps to ensure your headphones fit comfortably and noise cancelling in ear.Bluetooth V5.1 Technology: Compared with bluetooth 5.0 earbuds, 5.1 version wireless earbuds offer you an unparalleled audio experience with faster transmission speed, stronger connection stability, and longer range of bluetooth.You will experience a clearer and smoother music playback and conversations than ever with no more worries about signal loss or music dropouts.Premium Deep Bass Stereo Sound and CVC 8.0 Noise Cancelling: Adopted 10mm dynamic drivers, provides authentic, strong stereo bass, loud sound quality even if you are in noisy environment. Combination with CVC 8.0 noise cancellation technology, further enhances bass, deliver powerful yet authentic stereo sound quality with distortion-free bass and clearer treble, providing a clear music and call experience even in noisy environments.30 Hours Playtime and One Step Pairing: Built-in long powerful battery, the wireless earbuds can last for 5 Hours music time on a single full charge. The charging case can charge the twin sports earphones 6 times, So the earphones with the portable charging case will get about 30hrs playing music in dual-mode. Just take the bluetooth headphone out of the charging box, open your bluetooth, connect with "Power "BE1036". When you put it back, the earphones shut down and are recharging.IP7 Waterproof and Touch control: Adopting the advanced touch control technology, you can easily play/pause/skip music, answer/end/reject calls or activate voice assistant with simple-tap operating.Headphones waterproof earbuds are made of waterproof materials, multi process design headphone body, high specification waterproof test. NOTE: Please wipe the metal parts of the headphones with a dry cloth after exercise to avoid corrosion by sweat.