Bright but take care of it - Nitecore TM06 Cree XM-L2 U2 LED Tiny Monster LED Flashlight, 3800 Lumens

This light gets very bright and can probably see clearly at 100-150 yards and can see images up to 200 yards. I have not dropped it, nor plan on it and it is made of metal and doesn't seem very "shock resistant". You have to remove batteries when you are not using the light and I would even recommend putting back on the charger after each use.
All in all, it's a great light because you don't have to worry about the bulky, heavy spotlight or it's cords. It's easy to store and now I'm trying to find a way to attach it to an AR.