AVANTEK EB-11L Wireless Bluetooth Sport In-Ear Headphones with Microphone Sensational built-in CVC noise reduction technology precisely distinguishes between target sound and intrusive ambient noise, guarantees a superior audio experience and enhances the quality of your connection Attractive and extremely lightweight design provides a snug, comfortable fit  ultra-soft and specially formed earplugs to ensure long-term use and improved grip; wont bounce or fall out while Jogging, driving or during household chores Latest Bluetooth 4.1, passive noise canceling and EDR audio decode technology provides full bandwidth transmission with an operating distance of up to 33 feet (10 meters) with no loss of audio performance Easy access to controls, including built-in microphone, volume, pause, skip, and telephone  conveniently stream music, listen to podcasts or use your phone hands-free; able to connect with two cell phones simultaneously Compatible with all iOS devices and Android smartphones; supports 6 hours of music playtime or 8 hours of talk time without a recharge and lasts up to 100 hours in standby mode