The Arlo Pro and Arlo Essential have a lot of the same features since some of Arlo’s top tech comes through the subscription plan, not through the camera model. But there are some differences. The Pro 4 (the most recent model) is more expensive, has a wider field of view, and has local storage in the camera itself. It also requires a SmartHub. And while it has a siren, it doesn’t have a spotlight. (You can, however, buy a version with a floodlight.)