Easy to attach to the helmet, it is resistant to water and can also be used to answer incoming calls on the smartphone. To position the intercom on the helmet, you can use the mounting clip or the holder with adhesive tape supplied. Before setting off on your adventures, make sure the device is fully charged: There is a charging cable in the pack to power the receiver via the micro USB input. You can connect this intercom to your smartphone by pressing the switch-on button on the receiver for approx. 8 to 10 seconds. The LED light on the intercom will then flash and you can now establish the connection via the Bluetooth settings on your smartphone. The intercom can also be used to answer calls and listen to music. There are buttons on the receiver for managing calls, adjusting the volume and changing lanes. As soon as you receive a call on your smartphone connected to the intercom, your passenger or the other biker connected to you will hear a "beep" in the headset, signalling the incoming call, neither of whom can listen to your conversation. This ensures that your privacy is protected. You can use the intercom system either between the rider and the passenger or between two or three bikers. To be able to use this mode, you must have at least two intercoms that have previously been connected to each other using the switch-on button. Multi-user connectivity allows you to connect to a third and previously connected intercom: to manage calls between the driver, the passenger and another motorcyclist, you need to use the power button on the receiver.