1( Bluetooth 5.3 and Comfortable to Wear) Comfortably well and stayed in place even in the midst of rigorous activities,very comfortable in ears,very comfortable,lightweight and secure fit for exercise. Bluetooth 5.3 provides stable and fast connection compatible with iOS,Android and Windos systems. 2(Long-lasting Battery & Mini Charging Case)Continuous playback of music for up to 5 hours per charge.The large-capacity mini portable charging case can provide 6 times the full charge of the earbuds,and the long battery life provides excellent use Experience that the power of the music earbuds can last up to 35 hours while charging on the go. 3(3D Stereo & Dual Microphones)The bluetooth earbuds have Hi-Fi sound quality,deep bass and 3D surround sound!Combined with the groundbreaking noise reduction chipset,the unique noise reduction function will allow you to enjoy music without interference.What's more,you can also choose to use one earbud separately. 4(IPX7 Waterproof Perfo