This Mental Laser Pointer Pen is guaranteed to adopt latest microelectronics. And it has fixed focus length and uses sturdy and economical technology. This Portable Pointer Pen gives out green dot scope spot, continuous output. The continuous useful life is more than 5000 hours. And the beam distance ranges from 500m to 5000m. Shaped like a pen, stylish and convenient that you can take it anywhere anytime. You can use this Mental Laser Pointer Pen to point at any desired targets, project screens, lectures, or video monitors, presentations, museum and tour guides, point at the stars, and inspection.