The 16X varifocal lens allows the camera to quickly and accurately capture distant objects without compromising image quality. In addition, the camera with 3D zoom automatically pans, tilts and zooms to focus on your selected area, eliminating the need for manual step-by-step control. Accurate alerts are sent to your device when a person/vehicle/pet is detected. Hear and be heard via two-way audio to talk to your visitors, alert suspects when you are away from home in an emergency, or have fun with your cute kitty and pooch.