... penWell tested, high quality, fast delivery timeFunction: laser pen, laser pointer, Used in many applications and industries ... medical and astronomy, indicator, teaching batonWe can offer many color of the laser: red, blue, green, red/green ... 2 colors, blue/purple color. And offer different power: 5mW, 10mW, 30mW, 50mW, ... an adult. 5 in 1 laser pointer pen, green color