disappointed by this system. The LED is attached to a wheel too wide or too thick, so she gets stuck and you can not adjust the beam. Otherwise the lighting is OK, but not worth that of new Maglites equipped Original led. As I can not adjust the beam, the illumination distance is greatly shortened. To the point that I plan to return the original bulb. The switch on the heel works well. But is it really useful? In conclusion, a purchase which can really happen.