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QKZ. Product description. Bluetooth version: 5.0. Control method: touch control. Feature: 1. These earphones are multifunctional: Automatic startup/shutdown, pairing, and restart, shutdown when charging, and binaural stereo call. 2. Wireless earbuds in line with ergonomic shape design could perfectly fit with the ear to maintain comfortable wear for a long time. 3. It has unique design of medical silicone in the ear. Light-weight and IPX6 waterproof, when you are working or doing sports, there is no need to worry about falling off. 4. The earphone could provide strong bass stereo sound, which has higher definition and is more dynamic. 5. Touch control design makes it more convenient to use. Just press the button to play/pause music or answer/hang up the call. 6. The left and right earphones could be used separately, so they could connect two mobile phones simultaneously. 7. With built-in controller and microphone, they are designed for those who like classic music, rock music and popul