2. Green Laser Diode Beam;
3. Wavelength: 630nm -680nm;
4. Pressure button for Laser Beam;
5. Visibility: approx. 3 mile ;
6. Output Mode: Constant Wave;
7. Use 2 x AAA Button Cell battery;
8. Best choice of GIFT;
Warning: Avoid direct eye exposure, this is not a TOY,children use it through the guide of adult.