Bluetooth Sport Headphones,Noise Cancelling Wireless Earbud REMAX RM S2 Headset for Runing,Workout,Gym, In-ear Earphones Earbuds Magnetic Handsfree for Running Exercise Gym with Mic (silver black) Perfect workout headphones that are snug and secure so the headphones stay put while running, biking or at the gym. Built-in magnets let you attach the two headphones together when not using, and wear like a necklace around your neck, a convenient way to carry around when you don't need them. CVC noise Isolation technology reduces outside noises, enable clearer microphone sound. Long battery life allows the headphones to play up to 5 hours of continuous music at a time or 175 hours of standby time. Earbuds that work with all smartphones, tablets and music players. Latest Bluetooth 4.1 technology; easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices; aptX codec provides pure, CD-like high quality sound for compatible devices.