Simply push the button then you can see the striking red beam of light. Designed with clip that can hold in pockets or clip on notebooks. Lightweight and handy, suitable for putting in your pocket or handbags. The best suitable kit for professors, teachers, doctors, student presentation, etc. Use the laser pointer to point at any desired targets on projection screens, video monitors, and presentation graphics. Output power: Max 5mw. Output wavelength: 650nm. 2 x AAA batteries (not included).

Caution: Laser light, avoid direct eye exposure. Keep out of reach of small children.