The most affordable and popular pen-style Laser pointer ever made. Used widely by broadcast and film professionals. Build in 650nm laser for 500 yards emission range. It is perfect not only for business presentation, film and video production -- also for classroom use. The INFINITER 100 is made of aluminum, lightweight and durable with handy pocket clip in a rugged and durable elegant pen shape. Its laser beam is designed 5 times brighter than most comparable ones on the market. Uses 2 AAA batteries included and will run up to 40 hours.