A wireless wrist mouse, used with an apparatus including a display having a cursor, has a body mountable to a user's hand/wrist by wrist mounting structure. A motion sensor and motion circuitry are carried by the body and are operably connected to one another. The motion circuitry includes a library of command motions. The motion circuitry is constructed to generate first and second command signals corresponding to the first and second command motions when the body has been moved in predetermined manners for receipt by and operation of the apparatus. The first command signals correspond to cursor movement directions for controlling movement of the cursor over the display. The second command signals correspond to control functions for the apparatus. In some examples, the motion sensor comprises a MEMS sensor. In some examples, the motion sensor comprises a translational, rotational, and vibrational movement motion sensor.