Abstract: A cordless oscillatory hand held apparatus, comprises a casing 1 enclosing a rotationally oscillatory wireless electric micro-motor operable by application of an AC current. The micro-motor comprises an electromagnetic stator and a rotor cooperating therewith, the rotor having a rotor shaft extending from the micro-motor through the casing 1. The casing 1 includes a compartment for housing a battery 50 to power said micro-motor to produce rotational oscillation of said rotor and rotor shaft, and further comprising a DC/AC converter 60 for converting DC current from a battery 50 in said compartment into an AC current applied to the electric micro-motor.