Transform the USB-C connector of your iPad pro 11 inches and iPad Pro 12.9 inches (2018) into a 3.5mm jack with the Apple USB C to Mini Jack Adapter. That way, you can keep using your favorite earbuds with 3.5mm connector on newer iPad models without a 3.5mm connector. This USB-C cable is suitable for iPad Pro (2018). Note: this adapter doesn't have a Lightning connector.
This is an original Apple accessory.