Ideal for professionals who holster their light, Focus Lock™ adjusts the Advanced Focus System™, which enables this LED light to function as a far-reaching spotlight, or as an up-close floodlight. Smart Light Technology™ provides two power settings that deliver 220 lumens to 235 meters for up to one hour on high power or 30 lumens to 90 meters for up to 11 hours on low power. Smart Light Technology provides eight advanced functions – Morse code, boost, power, low power, dim, blink, SOS and defense strobe. The patented modular system uses fewer electrical points of contact to reduce the chance of failure. Water-resistant. Runs on four AAA batteries (included). Length: 5.39". Weight: 6.81 oz.