The EZ Laser RB is a compact battery-operated laser that projects thousands of red and blue laser beams. Create customized effects with independent control of red and blue laser diodes and achieve a run time of up to 6 hours from a single charge with the rechargeable, lithium battery. The EZ Laser RB covers a large, wide area and looks great with or without fog. Generate eye-catching effects with sound-activated and automated programs and wirelessly set color and rotation speeds with the included IRC-6 remote control. The EZ Laser RB is variance-free and ready to use right out of the box.