Lorex Live Wireless Home Video Monitor with 2 Cameras Camera and handset battery life up to 5 hours on a single charge; 2 1/2 hours with Night Vision activated on a single charge 2-Way audio for communication between camera and handheld monitor 50 camera viewing angle with up to 22ft. Night Vision capability 240X320 resolution at up to 25 frames per second Expandable to 4 cameras