This extremely bright, about 230 lumens/ft² at 3 ft, is the way to go! The KL4.5LM features a rechargeable Li-ion battery that lasts 15 hours per charge, low and high beam, and an indicator on the top that will display how much charge is left on the battery, the light number, and the time. The light is explosion proof, and the LED has a lifetime of 100,000 hours. This light is ideal for mining (zones I and II), railway, oilfield, airport maintenance, fire fighter, navigation, and police industries.