Small but no surprise these fabulous little motion sensor lights light up a big section of where ever you decide to use them. I put them outside along my house so when I walk up to my door at night with hands full I am aware of what’s around because I can see. Motion detects from 10 feet away and stays on for 30 seconds. You can mount with the sticky rounds or screw to the wall. My favorite part is they do not come on during the day. It only works at night so it conserves the battery life. Used indoor or outdoors this is sure to be enough light to help you see.