Mpow Swift Bluetooth Headphones, aptX Stereo Wireless Sports Headphones, CVC 6.0 Noise Cancelling Headsets w/Mic, Comfy Wearing in-Ear Earphones for Gym Running Workout Bluetooth 4.0 with aptX codec, earbuds seal with unique Cavity Structure Design, 20% effective area increased in vibrating diaphragm,all of these helping you enjoy a pleasant music journey and hear every nuance with crisp highs, natural mid-tones, and rich bass. Signal Enhance Technology: Using MPOW on your body without traditional limitations. Even put them in bag at the gym and workout at a good distance without signal droppage. Comfortable and stable design for all levels of exercise make easy accessible on-ear controls when you keep moving and eliminates troublesome wires tangling while you control your music or calls. Compatible with most Bluetooth-enabled cell phones; reduces noise, wind and echo. Perfect protection system:protected you against sweat and moisture damage.