L1 LED Light provides a concentrated close quarter beam. The LED lamp is available in white, red or blue/green and provides up to 50,000 hours of usage. Four replaceable LR 44 alkaline coin cells (included) offer up to 130 hours of battery life. It is equipped with a neck lanyard and a handy push button on/off switch that can be used with only one hand. The L1 LED Light is ideal for all applications and is water resistant (not for diving applications).