As you already know, the AirPods are Apple's smart headphones, headphones that have turned out to be wonderful and with which you can enjoy incredible audio with very achieved bass and extreme simplicity. They connect to the iPhone or any other device via bluetooth, so if you have a phone other than iPhone you will be able to use them although not with all the Siri options.
However, what if you want to use your AirPods with a device that does not have bluetooth, what if you want to use it on an airplane with the possibility of listening to music or sound of an internal line where a 3,5 mm jack plug must be plugged?
Those of the Twelve South company have thought about it and have created a device they have called AirFly that is nothing more than a device that what it does is take the analog audio signal that can come out of a 3,5mm female jack plug transmit it via bluetooth, so in this way, you can use your AirPods with any device that has an audio output through that type of plug, that is, the plug of the headphones of a lifetime and does not have bluetooth.
The device is very simple and you just have to connect it to the device that does not have bluetooth. It is immediately possible to recognize the signal of it with your AirPods without having to use anything else. The signal emitted by the device is recognized by the AirPods case and establish a connection quickly.
It costs $39,99 and you can know more about this little device in the following link.