Encapsulated Class IIIa 5mW laser diode with a 650nm red wavelength. Spec: Weight: 11.85g, Diameter: 10.11mm, Length: 32.82mm, Wire length: 100mm, 650nm wavelength, 2.8 - 5.2V DC, voltage input, 25mA max current draw, Operating temperature -10°C to 40°C. ***Please remember do not let anyone look directly at a laser's output without eye protection as it can be harmful***.