Perfect for slide presentations, wall charts, and lectures. Provides a brilliant red light at the highly visible 650 nm wavelength with a beam diameter of 3.5 mm. Power Class III laser has an output power of 4 mW and a range of 300 feet.
Three silver-oxide batteries provide months of intermittent use or 2 hours of continuous use. Switch is momentary on/off. Size is 9/16-inch diameter x 2-3/8 inches. Weighs less than one ounce. Supplied complete with batteries and key chain.
