Turn ANY non-Bluetooth pilot headset into a bluetooth headset,compare to bxxlink ii and better than bxxlink ii | Bluetooth 5.0 allows you to connect to two devices,Enables you to use your Bluetooth cell phone and any music source wirelessly in the cockpitat the same time, | With 2 different power supply choices, besides 2 x AA batteries, also have USB type C external power source input, to by pass batteries for power USB POWER, you can use together with Power bank so can last for MANY hours,With a girl's voice prompt,Low Battery Indicator and with voice prompt | Three types Audio Priority Modes AUTO,Mix,Mute, very light weight only 130g | Great music sound quality with NEW sound processing chip,USB type C external power source input,New extremely durable cable.The cable is made from tough,flexible TPE, with high-strength Kevlar reinforcement and shielding from external signal interference