I thought this was going to be a great replacement for my very old (for an led light) flashlight. I was wrong. When I first got this light I was very pleased with the size and impressive amount of light that it produced (almost too much light in fact). The switch has proven to be very disappointing. After only six months of service the light now only switches on when and how it wants to. Many times when I try to turn it on, I must try several times to get any response at all, and then it may light brightly, it may light at a very low level, or it may flicker for a while and then go out. This behavior occurs with alkaline or rechargeable batteries. My first led light lasted for over eight years; this one is useless and undependable in less than eight months.