Bluetooth V5.1 technology: Compared with Bluetooth 5.0 earbuds, the 5.1 version of the wireless headset provides you with an unparalleled audio experience, faster transmission speed, stronger connection stability and longer Bluetooth range. You will experienceclearer and smoother music playback and calls than ever before, without worrying about signal loss or music loss. High-quality deep bass stereo and CVC 8.0 noise reduction: Using 10 mm dynamic driver, even in your noisy environment can provide real, powerful stereo bass and clear sound quality. Combined with CVC 8.0 noise reduction technology, it further enhancesthe bass, provides powerful and realistic stereo sound quality, distortion-free bass and clearer treble, and can provide clear music and call experience even in noisy environments. 30 hours of playing time and one-step pairing: Built-in long-power battery, wireless earbuds can last 5 hours of music playing time once fully charged. The charging box can charge the dual sports earphones 6 times, so it takes about 30 hours for the earphonesand the portable charging box to play music in dual mode. Just take the Bluetooth headset out of the charging box, turn on the Bluetooth, and connect to "Power "BE1036". After putting it back in, the headset will turn off and charge. IPX7 waterproof touch control: Using advanced touch control technology, you can easily play/pause/skip music to answer/end/reject a call or activate the voice assistant with a simple click operation. The earphone waterproof earplugs are made of high-qualitywaterproof materials, the earphone body is designed in multiple processes, and the high-standard waterproof test is performed. Note: After exercise, please wipe the metal part of the earphone with a dry cloth to avoid corrosion by sweat. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.