Our recommendation: You should absolutely use both a microchip and an AirTag on your dog. You want to increase the chance to find your lost dog as much as possible. The AirTag does everything that the microchip does, just better. The reason we don't recommend replacing your microchip is the following. Microchips have been the standard for finding your dog and it wouldn't hurt having both.
A Dog Collar should be easy and quick to open but secure when needed. This is exactly what the Fidlock V-Buckle is made for. FollowPaw AirTag Collars are equipped with this premium buckle to provide the best possible user experience for you and your dog.