Vivid Light Bars RGB Halo Straight Light Bar flash millions of colors,RGB strobe effect controlled by Bluetooth APP on Android or ios. The special design makes them easier to install, just DIY install them. Appropriate spot and flood beam proportion provides optimal light spread to see road condition clearly. Waterproof and dustproof make you not have to worry about any weather condition and bad road situation. The aluminum double heat sink is wonderful that they can work at -40~80℃. So, popular halo lights, good quality and best after-sale service make that you are deserve to have it.