Dr Who Tenth 10th Doctor Electronic Sonic Screwdriver Underground Toys

Screwdriver measures 7-inches tall x 1-inch wide. Features button-activated light and 2 sound effects. Hidden ultraviolet pen and UV light that reveals your secret writing. Spare standard ink nib. Requires 3x "AG13" button-cell batteries (included). Clamshell packaging.
The sonic screwdriver is a fictional tool in the British sci-fi television series Doctor Who. Its most common function is to operate virtually any lock, mechanical or electronic, and thus open doors for escape or exploration. It has also been used for repairing equipment, as an offensive weapon, and occasionally even to drive screws. Like the TARDIS, it has become one of the icons of the program and is closely associated with the Doctor