NOVELTY - The driver (200) has two planetary gears rotatably coupled to a sun gear, which is provided on a rear side of a carrier and extends beyond a rear side of another carrier. A ring gear is rotatably coupled to one of the planetary gears, and a rotation reduction gear transmits rotary force to a socket (103). A battery i.e. sodium cell, includes a universal serial bus port (201) and supplies uniform power to a motor. An overcharge prevention circuit is provided in a driver case (101), so that longevity of the battery is increased and the battery is quickly charged.    USE - Wireless small motor driver e.g. portable motor driver, stick-type wireless small motor driver and screw driver such as gun type driver, for screwing or tightening a bolt or a nut in a small electronic device such as notebook computer, mobile phone, thin film transistor LCD, and video player, and a large motor driver in an industrial application. Can also be used for a vehicle.    ADVANTAGE - The driver is provided with the rotation reduction gear that transmits the rotary force to the socket to increase the torque and produce a large number of revolutions so as to perform an operation of tightening the bolts and nuts of small device, or medium-size or large-size device with high mobility and operating precision and efficiency in a less power consumption manner. The overcharge prevention circuit is provided in the driver case, so that service life of the battery is increased and the battery is quickly charged. The design of the driver ensures the safety of a worker while working at night time using an illumination lamp. The driver is designed in small size and light weight.    DETAILED DESCRIPTION - The battery is selected from a group consisting of a lithium ion polymer cell, a lithium metal polymer cell and a sodium cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a wireless small motor driver having a rotation reduction gear.    Driver case (101)    Socket (103)    Wireless small motor driver (200)    Universal serial bus port (201)    Illumination lamp (202)