This flash light is great. I got it for when we go camping because it can get very dark at night around trees and bushes. My eye sight is not the greatest and it gets worse at night. This has been a great flash light to have because of how easy it is to use. It has four lighting settings. One is for bright. When you press and hold it goes dim. When you do it again it does the flashing effect. You can get one here http://www.nightprovision.com/products/night-provsion-gmetal-5-innovative-dual-function-flash-light-lantern-500-lumen-tactical-led-flashlight-torch-usb-rechargeable-pcb-18650 I think that is very useful for emergency on the side of the road or when you are hiking. The last one that it does is for the side light. This is very easy to use and handle. This is rechargeable and it comes with the battery that’s needed.This is one of the best lights that I have. I would recommend this light. I received this product for free in exchange for my honest and unbiased review.