I’ve used it indoor for night time navigation without using the house lights to avoid waking up the baby. It works like a charm. Battery lasts forever, and the mobile charging is amazing. I keep it on my backpack, because I can use at work from times to times- either as a source of light, or to charge my mobile. There is only one issue you should keep on mind: the button is very easy and soft to activate. Sometimes I have it on my pocket, and when I realize, it is on. No big deal, but you should be aware. Great product. Although I didn’t put it through a rough use, it does seems sturdy enough for a regular trekking or walking around in the woods.