The Tracerline TP-8690 Optimax 3000 portable, blue light LED fluorescent leak detection flashlight helps techs pinpoint air-conditioning and fluid leaks. The Optimax 3000 offers power equal to 150-watt lamps that normally must be plugged into an AC power source, and has an inspection range of 20' (6.1 m) or more. Powered by a rechargeable NiMH battery, the unit has an LED lifetime of 50,000 hours. Comes with fluorescence-enhancing glasses and an AC battery charger.