Yocan Evolve Vaporizer is a very slim wax pen that features awesome functionalities. This dab pen has a dual quartz coil that promotes strong and flavorful vapor. It also has a functional coil cap was designed to keep your oil from leaking and prevent your mouthpiece from getting hot. This wax pen has a 10-second continuous use that preserves your battery especially when you are outdoors. Having such feature helps in keeping your device from overheating as well. Functional Coil Cap Dual Quartz Coil 10-Second Continuous Use Very Portable 650mAh battery