I'm the marketing director for an A/E firm. Thought this gizmo would be great for presentations... I ordered 12 of them to give to all Partners and Principals in the firm. Much to my embarrassment, the unit I retained for my own personal use literally came apart while I was trying to access the flash drive. Bottom line - the metal device has been cheaply glued in areas where it should have been permanently soldered. The laser pen works well, the flash drive seems to work just fine, and the pen certainly writes, but I've had to tape the unit back together where the glue has failed.