The Gerber Omnivore Multi-Battery LED Flashlight is a state of the art flashlight. In spite of its tiny size, it is still high tech. It is a pocket flashlight with the help of which you will be able to get light wherever you wish during power outages and even emergencies. It allows you to choose the type of battery. It is possible for you to select from AA, AAA and even the CR123 batteries. The battery can be used to provide a bright white LED light. when you buy, you will get along with this battery one AA Battery.