This is a fantastic light! I was looking for a flashlight with a built in cell phone charger for my daughter. Something she could keep in the car in case of emergency. That's when I found the Satechi LightMate. This was just the ticket. And it came with a glass breaker to boot!! Perfect. I liked it so much, I bought myself one too! I find myself using this all the time. It's bright!!! I take it with me when I visit my friends in Pennsylvania. They live in a wooded area which is quite dark at night. This thing lights up the woods like a giant search light. The light has five modes on it, High, Medium, Low, Strobe Flashing and SOS Flashing. I use the low light settings when I'm using the screw on diffuser. It makes a nice area light that looks like a fluorescent lamp. One thing I would change about that is you have to go through all the light modes every time you use it. In other words, if you turn on the light and it's in bright mode, then shut it off, the next time you turn it on it will be in medium brightness mode. Do it again and it's in low. It would be nice if it would reset itself once you shut it off. The cell phone charger works well.. It brought my Galaxy S III from 50% charge to full in a reasonable amount of time without killing the battery. They say the light is waterproof, but I'm sure that's only if the glass breaker and it's associated rubber cap are in place. Otherwise, you have two exposed USB ports. Speaking about the rubber cap, it would be nice if it had some method to attach it to the flashlight. Like a little rubber band or something. I almost lost the cap on a couple of occasions when it popped off. That can happen if you hold the light farther back on its housing. Aside from these small issues, it's a great light and I will buy another one if they become available again..