I have to take the opportunity to sing the virtues of the Micro Photon. I don't have the Doug Ritter version but a black one with orange bulb. It's a single squeeze LED with an on off switch and about the size of a quarter but thicker. I wear mine on a paracord lanyard and never take it off. (I have knock-offs on my keychain, FAK but this one is the real thing.) It's simple to use and dependable. I chamge the battery twice a year at daylight savings time and it's never failed me. I got mine shortly after joining ETS and I use it multiple times a day. I use it for many things but have it to be brilliant for finding lost soother in the wee hours or checking on the baby after she makes a weird noise in the middle of the night. Trust me when I tell you that that's high praise.