Connectivity and safety - The user-friendly AERIAL Bluetooth bicycle intercom provides a stable, secure connection while easily attaching to the bicycle helmet. Bluetooth connection - With the bicycle hands-free system, you can make calls, listen to music and use Siri or Google Assistant while cycling - in excellent sound quality. Safety in traffic - The bicycle helmet Bluetooth headset has been designed to not cover the ears, so that ambient noise is well perceived in road traffic. Practical Application - The lightweight and compact helmet headset attaches to the helmet with two small magnetic clip holders and can be quickly and easily attached and removed. Weather protection - The bicycle helmet intercom allows quick communication between. It is waterproof and thanks to the microphone cover dust and wind protected (IP67 certified).