It is a multi-function aluminum LED flashlight as there are three mode switch settings. The first press is to make the laser pointer work; second step makes 11 LEDs which are around the laser point work; then press the black rubber button the third time, the outside circle about 28LEDs are working. However, the laser pointer doesn't work during the second and the third steps.  In addition to this, laser is in class 2 based on American standard. It uses 3 pieces AAA batteries. It is 128mm long, the head diameter is 44mm, and the body diameter is 26mm. It is water resistant and shake resistant.