4th and 5th Doctors' Sonic Screwdriver - Factory sealed so UNTESTED; we make no warranties as to condition due to age of item. Doctor Who Sonic Screwdriver - 4th/5th Doctor's Replica Gadget with Dr Who Sound Effects and Spring-Loaded Activation - Handier than a Swiss Army knife! This terrific release from Underground Toys presents an electronic version of the 4th/5th Doctor's Sonic Screwdriver that features 2 sounds and spring-loaded sound activation. It measures 8-inches long. Outstanding! The Sonic Screwdriver is a versatile tool and defensive device first used by the Doctor in his second incarnation for opening up hatches, panels, and controls. Later uses included cutting through wall sections and even as a conventional screwdriver. During the 4th/5th Doctor's reign, he remade yet another similar style of Sonic Screwdriver but with many more features and functions, including micro-soldering of circuitry, cutting wires and bulkheads, and even detonating Dalek explosives! For Ages 5+. Batteries included