This is the genuine Joye306 LR atomizer with 1.5ohm low resistance, which is suitable for Joye eGo, Joye306 LR atomizer comes in matte black mouthpiece.  Joye306 LR atomizer makes the higher voltage vaping possible without the aid of 6volt or higher mod. It is recommended NOT to use LR atomizer with regular Joye510, Joye306 battery or USB passthrough, which will shorten the span life of regular battery or damage your USB port. Please use Joye306 LR atomizer with more than 600mAh battery, such as the eGo battery. These have the 510 thread and will work with battery combinations that take the 510 atomizers.