Two bright power LEDs provide 300 lumens of bright white light making the MB380/MB390 one of the brightest wireless spotlights on the market. The bright LEDs never need replacing–it’s so efficient that you will get more than 3,600 activations on one set of batteries. The spotlight instantly turns on when it detects motion, and can detect motion from as far as 25 feet away with 160 degrees of vision. The spotlight turns off automatically after 20 seconds of no motion, conserving battery life.