E-3lue EBT922 NFC Bluetooth Earpiece for Smartphones (Gray With High-tech bluetooth 4.1 technology. Data transmission more faster and stable.Works with any compatible Bluetooth-enabled phones,such as iPhone,Samsung,Blackberry,HTC,LG,and more. Delivers top-notch sound via its built-in noise reduction and echo cancellation,and ensure high-definition voice calls with zero distrance. Combined with the latest technology of speech enhancement. NFC function- No need for pairing , Easy to Connect. Bluetooth 4.1 range up to 10 meters that you can roam around office or home while on the phone.(up to 10 meters basic on the situation of normal use without the interference of other bluetooth devices or electronics around you ,or the sign will be affected and getting weak. Within 4 meters is the best status). Attractive , interpretation of the lastest trends and fashion styles with LED light. With imported England CSR chip.Support to connect with two phones at the same time. Long lasting battery life:Battery lasts for over 10 hours of talk time and features DeepSleep power-saving mode when away from your phone.