CARESHINE 6 in 1 Powerful Green Laser Pointer Pen Beam Light 5MW green Laser High Power 532nm with Bicycle Bell Metal Horn 6 Patterns--Straight laser beam + 5 different constellation patterns Bicycle Cycling Bell--Easy to fix to bike Nice and loud sound Light and fashionable Item Information-- Length: 15.5cm Wavelength: 532nm Occasion--The laser point pen can be used on Meeting/Education guide, Astronomy stargazing,Guide instruction,Outdoor travel&Adventure and Party atmosphere making. Tips--Do NOT point laser at people. There is danger of physical harm if beam is shined into the eyes. Children should only handle lasers under adult supervision.