E-feel Urbuds R1 Wireless Earbuds Sport Headphone, in Ear Stereo Bluetooth 4.1 Earphone with Mic for TV for iPhone Samsung Bluetooth 4.1 +EDR : 2016 Latest bluetooth tec is compatible with most bluetooth-enabled phones. Noise cancelling Reduce external sound and bringing pure high quality HD misic Battery Terms: 60mah built-in rechargeable li-polymer battery ensure a 4h talking time and 160h standby time. One of the best cordless headphones Sweat Protection: Water resistant protection against body sweat and wet weather conditions. The waterproof and sweatproof material will protect your earbuds when running, cycling. Super Signal: Super ceramic antenna improves signal strength and eliminates intermittent connections. The transmission distance up to 20m Ergonomic earbudss design: Comfortably over ear design fit the ear canals, i.e. free you from adjusting the headphones during basic fitness like jogging, hiking, doing exercise.