Yocan Armor Concentrate Pen VaporizerAt just over 4 inches (10. 16 cm) long, the Yocan Armor Concentrate Pen Vaporizer is among the smallest and most discreet vaporizers available today. This little hard hitter is equipped with a dual quartz coil atomizer to provide the smoothest and purest vaporization experience, and it has a functional coil cap to keep heat and your concentrates securely contained. The Armor Vaporizer's 10 second preheat function heats your concentrates before use