AAC & aptX LL technologies provide high fidelity audio from all devices. Dynamic drivers with NuForce proprietary Sonic coating for crystal clear sound. Ability to activate Siri & Google Assistant with built-in CVC noise-canceling microphone. Uses both Bluetooth & NFMI (Near-Field Magnetic Induction) to maintain a reliable connection between the 2 earpieces. Water- & weather-resistant for protection from rain & sweat (IPX5)--ideal for active lifestyles. Patented SpinFit 360deg -rotation eartips for secure & comfortable fit. 16-hour battery life with included charging case. Includes 5 pairs of eartips & USB charging cable.