Wavelength: 630-680 nm Max Output: 3-5 mW Class IIIa Laser Diode Dimensions: 2.5 inches length x 0.5 inches in diameter Comes in assorted colors
Uses 3 PCS LR44 1.5V batteries (included) DANGER: Laser Radiation. Never look directly into the laser beam. Never point a laser beam at a person. Do not aim the laser at reflective surfaces. Do not allow children to use laser pointers unless under the supervision of an adult.
