The Doctor's handy-dandy sonic screwdriver is the epitome of multifunctional gizmos. Whether it's driving a screw, picking a lock, or disabling an opponent, this amazing implement seems to exhibit the precise capability required by its owner at the time. This sonic screwdriver replica measures 9.25" x 2" x 8.5." This replica features button-activated light and sound effects, and includes a hidden ultraviolet pen and UV light that reveals secret writing.