Holiday Living LightKeeper Pro Light Set Repair Tool and Tester. I bought this a while back and then it went to storage. This year I pulled it out and tried using it. I did not understand how to use this light device or understand the instruction and I just gave up. Gave up kinda easy. New batteries were bought for this. Device is in good shape. Comes old school replace lights (6) and I use 1 or 7. Packaging says, - Sound & Light Voltage Detector Locates Bad Bulbs - Bulb & Fuse Tester - Convenient Organizer in Handle Holds Extra Bulbs and Fuses (or even lights). There's instructions on the packaging cardboard(back) and then when wiping down the device to sell I found a paper folded packet inside the handle compartment. For indoor and outdoor use.