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Bone-Conduction Headphones Bluetooth 5.3 IPX8 Waterproof Swimming Headset 18H Playtime Open Ear Sports Earphone Wireless 32G for Running, Cycling, Hiking, Driving, Gym Safty and Comfort: The open headphones weigh only 1.2 ounces and are made of silicone for a more comfortable fit. With the latest bone-conduction technology and open design, you can enjoy great music while paying close attention to...