Noise Isolation Design: bring you crystal clear sound without noise disturbance while enjoying awesome music;
Super Comfortable Material: Sweat-proof silicon gel earbuds and TPE ear hooks are produced to bring you ultra-comfortable wearing experience;
Exchangeable Ear Plugs: Three pairs ear plugs with S/M/L sizes are provided to perfect fit your ears and enhance listening experience;
Bluetooth 4.1 Technology: Built with advanced Bluetooth technology to ensure 33feet long distance connection and instant transmission of HD sound;
Extended Playing Time: 8hrs long playing time enables you enjoy music while walking, running, biking, climbing or doing other exercises for a long time.