The scanner watch could scan for alien life and technology. (TV: Secrets of the Stars, Enemy of the Bane, Prisoner of the Judoon, Mona Lisa's Revenge) Like a geiger counter, it made louder noises as it got closer to an alien source. It could connect to the local power grid and never lost power. (TV: Revenge of the Slitheen) Sarah Jane detected the Bane inside the Bubble Shock factory and the alien ingredient inside a bottle of Bubble Shock that Kelsey Hooper had. (TV: Invasion of the Bane) It started to beep when the Kalazian Lights were about to appear. (TV: The Lost Boy)