Have you ever put up your Christmas lights only to realize that some of your bulbs don't light up? Don't worry! With the light keeper pro you can fix most lighting issues in seconds. Simply plug in your light set into the pro, press the trigger and watch the shine come back to life. It works excellent on incandescent mini light sets, icicle lights, net lights, outdoor decorations and pre-lit Christmas trees garlands and wreaths. Details:Red11" x 2" x 8"Battery operated (Batteries included)Includes an audible continuity detector as well as a fuse and bulb testerInclude an easy-to-use bulb puller storage compartment and extra 2.5 volt bulbsPlasticFor indoor and outdoor use