[NEWEST 2018] Bluetooth Headphones w/12-14 Hours Battery - Best Wireless Sport Earphones w/Mic - Waterproof HD Music In-Ear Earbuds for Gym Running Workout Noise Cancelling Headsets for Men, Women Noise cancelling In-ear design 7mm drivers for High-performance sound Three sizes of silicone ear-cup for comfort 3.5mm stereo plug Frequency response: 20-20K Hz