Ultra HD headlamp produces 530 lumens of light and has multiple feature modes including spot mode and chip on board mode. Two UV lights allow you to detect counterfeit currency, blood, urine and special markings on driver's licenses. Elastic headband is adjustable to provide a firm, comfortable fit on most users. Push-button switch allows you to quickly operate the light with just the push of a button. Water-resistant headlamp with included AAA batteries provides up to 2 hours of runtime.