Wireless Bluetooth Headphones, ISTOYO BT4.1 Waterproof Stereo Sports Earphones, Noise Cancelling Wireless Earbuds CVC 6. 0 Noise Cancelling Microphone reduces outside noises, enable clearer microphone sound. High Stereo Sound Quality makes sure that there is nothing left but you and your music in the world. Long Battery Life, Fast Charging: Up to 6 hours talk time/music time, it takes only 1-2 hours to charge your phone. Built for your active lifestyle. value, Ergonomic design optimized for ultimate wearing comfort to match your active lifestyle, value like running, jogging and cycling. 12 Months Warranty: We guarantee to provide 18 months warranty period and help you solve any problems within 24 hours.