Altos electronics offers led based emergency light. Since the source of light is cluster of leds, the entire unit is vibration/shock proof. The unit is very compact, handy and portable. As the leds consume very little power, this compact but powerful light can operate for 4 hrs continuously [or 20 hrs in spot light mode] once charged. As an emergency light is sufficient to illuminate room of size 12` x 12`. The light has inbuilt charger and battery. It can be directly plugged in mains socket for the charging purpose. The size of emergency light is 135 x 45 x 45 mm and it weighs only 180 gm including batteries and can be carried in the pocket easily.