Review on XT AUTO 6LED Car Truck Emergency Beacon Warning Hazard Flash Strobe Light White/White 4-pack: Maximize Safety with Brilliant Flashing Lights by Brian Fisher

Overall they provide good illumination. light, thin, easy to install. However, they don't stay in perfect sync, but what they're good for. Out of the box, one of the lights pulled out the wires on the back, causing a short circuit. I have some experience with electrical devices, so I took the device apart and had to re-solder the wires to the circuit board. I sealed the lenses and wires with rubber putty. I had no problems with this light. After about a month, I noticed condensation in the lens in different lighting conditions. I thought everything was fine, but in the end it stopped working. I just took it apart and unfortunately I think it's toast. IF YOU SEE CONDENSATION IN THE LENS, REPLACE OR REPAIR IMMEDIATELY. Honestly, you get what you paid for. I have ordered another set and will seal them all as soon as I receive them. In short, they're bright day and night. They have some flaws, but they're pretty good for the price.