Scanner watch

The scanner watch is a device used by Sarah Jane Smith to detect alien life, and can identify the species and origin of that life. Superficially, it appears to be a normal wristwatch, but the face of the watch conceals scanner screen. Like the Sonic lipstick, it was left by the Doctor for Sarah jane inside K-9 Mark IV.

Capabilities

 * The scanner watch can scan for alien life and technology. Like a geiger counter, it makes louder noises as it gets closer to an alien source.
 * It is capable of connecting to the local power grid and never loses power. (SJA: Revenge of the Slitheen)
 * Detected the Bane in side the Bubble Shock factory and in side a bottle of Bubble Shock that Kelsey Harper had. (SJA: Invasion of the Bane)
 * It started to beep and told Sarah Jane that the Kalazian lights were about to appear. (SJA: The Lost Boy)
 * Sarah Jane used it to scan Maria Jackson's old house, after she moved to America to see if any thing alien might have been left there. (SJA: Day of the Clown)
 * Sarah Jane used it to scan Martin Trueman to see if he was an alien. (SJA: Secrets of the Stars)
 * Sarah Jane used it to see if the The Trickster had manifested in 1951 yet. (SJA: The Temptation of Sarah Jane Smith)
 * Sarah Jane used it to scan Gita Chandra's flower shop Bloomin' Lovely to see what sort of alien had taken her. (SJA: Enemy of the Bane)
 * Detected that Androvax was hidden inside a girl. (SJA: Prisoner of the Judoon)
 * Used it is to try and register what was causing the ghosts at Ashen Hill Manor. However, she just noticed it was unusual and neither human nor alien and that it was dormant. (SJA: The Eternity Trap)
 * Detected Mona Lisa and The Abomination. (SJA: Mona Lisa's Revenge)

Behind the scenes

 * The Sarah Jane Adventures logo is on the watch's face and on the strap.