Here is a headset that combines with your iOS device to bring you FM radio without an internet connection. The SOUNDOT AF1 Headset has a built-in FM receiver with digital signal processing technology for custom sound effects. You can use it to listen to your favorite music, watch videos, and answer calls. The headset doesn’t require any internet connectivity for FM channels.
The SOUNDOT AF1 headset has an app that lets you customize your listening experience. Its 3-button remote lets you switch mode fast. This is an Apple MFi certified accessory. Its app comes with a 6-band equalizer and 11 music settings.[where to find it]