Take This Flashlight Anywhere, ultra beam LED flashlight can light up a room! Choose from the power of 21 or 100 LED bulbs, the beam is INCREDIBLE. Durable aluminum with 100 LEDs is 7 1/2"L uses 4 AA batteries (not included). The 21 LED light is 4"L uses 3 AAA batteries (not included) This is the bright light you can put your hands on—and depend upon—in an emergency.