5 PCS Small Laser Pointer Pen 650nm Red Light Visible Beam 1mW For conference presentation

Instruction 650nm Red Ray Red Laser Pointer Pen Utilization of the latest crystal technology and optics creates this high quality;pen-sized laser pointer . It emits an intense,brilliant laser beam,Use your Laser Pointer to aim at any desired targets on projection screens,video monitors,presentation . Press the push button to turn it on,release the push button to shut if off automatically.     Specifications Material: Aluminium alloy Wave length: 650nm Normal operating temperature :15-30 degrees Storage Temperature: -10℃ -40℃ Power supply: 2 * AAA Batteries (Not included) Laser Color: Red Pen Color: Black Item size: 155 * 13mm Total Weight:110g   Usage Travel, tourism, mountaineering, outdoor sports guide guide Teaching, speech, residential zone, museum, the exhibition hall, such as the guide indicator Factories, mines, construction site, natural disasters, lifesaving relief signal indicator Astronomical workers, astronomy enthusiasts xinghai refers to navigate the vast star indicator Party, concerts, seminars, concerts, etc all kinds of entertainment party lights   Safety   Do not look into the aperture of the laser beam. Laser radiation is potentially harmful! Do not directly aim into eye. Keep out of reach of children.     Package Includes 5x Red Laser Pen(No battery and charger)