The Kind Pen knows how most vapers like to have the option of changing the temperature at which their concentrates are vaporized. Their 510 Thread Variable Voltage Battery is simple to use but still allows for this kind of functionality. The LED lighting on this analog vaporizer allows you to change between predetermined voltages. It has a setting for low-temp dabbers, high-temp ones, and in between. The 510 Thread Variable Voltage Battery features 350mAh temperature control as well as a 5-click on/off safety feature. The same end that fits 510 thread cartridges (common in today's market) also holds the included USB charger.