The VHL-4X6DRL Patents Pending Low Beam DRL Combo is the first LED DRL/Low Beam Combo Light available. If your vehicle is equipped with an OEM DRL function with Halogen lighting, you can now replace your old head lights with the new DRL/Low Beam combo lamp from Vionic. Our built in electronics will automatically interface with your vehicle's on board modulated voltage system (PWM) allowing your new Vionic LED DRL system to perform flawlessly with no interfacing problems. The new Vionic series is thinner with a slim 3.7" depth profile design and a ultra light 1.5lb overall weight preventing damage to the light bucket unlike competitive brands.