ECHO

a proprietary electronic computerized device in the shape of a pen which can record audible sounds, words, and graphics written by such device, link such sound to such writings, replay such sounds and writings, and transfer such sounds and writings to an external computer; computer hardware and proprietary computer application and operating system software exclusively for use with such a device

printed matter, namely, instruction manuals and reference guides about operating a proprietary mobile handheld computer; printed matter, namely, reference books and user guides, all of the aforementioned in the field of a wide variety of topics and subjects [; book marks, designed for use with a proprietary electronic computerized device ]