If you've ever wished that you could be a fly on the wall -- have we got a promotional item for you! Create a dynamic visual display with this 2 1/2" x 1 3/4" cylindrical device. Just gaze through the eyepiece at the diamond-faceted clear plastic lens to create the effect. A simple idea that has inspired imaginations for more than 200 years. You'll have to tear customers away from your table at the next trade show, convention, grand opening or other marketing or social event. A full color digital label shows off your brand. Add your logo or message to customize.