Small But Bright:The pen flashlight contains the most updated super bright Q5 LED and powered by 2 AAA batteries(Not Included). The penlight provides light is more than enough to blind or disorient a potential attacker.At the same time, its brightness allows you to see things even where there is reflection. High Quality:The main body is made of Aluminum alloy which can make heat dissipation more effective. The lens is made of high transparency tempered glass which makes it Scratch-resistant.