I use this lamp in case of power failure (less risky than the use of candles) or tinkering in places not very well lit (more practical than a torch that I never know how to arrange my work plan ). 4 LEDs are adjustable and provide a fairly substantial brightness (but much less than a real bright neon anyway, normal) It works with 3 AAA batteries. I recommend using 2 lots of 3 Rechargeable batteries never fail. It can optionally be attached to the wall by 2 stickers 3M back, but I have not yet tested. The lamp lights up at the touch of 2 small silver studs visible on the product photo, between 2 LED, more practical than a button and very sensitive. Attention no automatic ignition by motion detection on this product! it should be used when it is desired a permanent light, even in the absence of movement in front of it.