Round LED Highbay fixtures, often referred to as UFO LED highbays, are a great way to upgrade HID sources that have the same look. With LED you will get far more efficiency, longer life, IP65 rating and a myriad of options from emergency backup and dome reflectors to multiple mounting options and PIR sensors. Many round LED highbays come with color-select/power-select technology which allows you to choose between 3000K/4000K/5000K color temps and various wattages options all on the fixture itself with the simplicity of a switch.