This is one of the best things on my survival kit. From previous experiences (Hurricane Maria in Puerto Rico) I have been without electry power for more than 25 days and it was very difficult at night to illuminate the rooms. This bulb is perfect, for camping, storm seasons since it does not necessarily need batteries or electricity to recharge, it can be recharged with the sun with the solar panel that it brings and work for 8 hours! The lighting is bright. This bulb has a button to turn on and off and a hook to put on top. I must mention that it can also be recharged via USB. This bulb is the solution for camping, survival prep or emergency times.