The Buzzy 510 Thread Battery features a 400mAh battery, also features an all-quartz atomizer (quartz frit disc, quartz cup, quartz tube) and an easy-to-remove glass mouthpiece. Come with not only the mouthpiece but the horizontal quartz coil and the tip cover. There is only one button and you can change the working voltage among 3.2V, 3.6V and 4.0V. It features a preheating function. Quick click the button 2 times to preheat.  The buzzy one can be used with oil cartridge and to be dip&dab vaporizer. We have black, green, and silver ones available now. Main Features: 400mAh battery 510 thread battery Quick click the button 2 times to preheat, click one more time to stop preheating Quick click 3 times to change voltage Blue=3.2V Green=3.6V Red=4.0V In the Box: 1 x 400m Ah Buzzy preheat battery 1 x Buzzy quartz coil tip 1 x Glass mouthpiece for dip & dab vaporizer 1 x USB Cable 1 x Gift Box 1 x Instruction Manual Category: 510 Thread Battery, Dab Pens&Wax Pens