iStick 50W is a super upgraded version based on iStick series batteries. Powerful vapor can be generated due to the expanded range of output voltage(2V-10V)/ wattage(5W-50W) with 4400 mAh battery capacity. It retains strong spring connector and wear-resistant stainless steel thread. Moreover, the additional temperature alarm function makes it high-safety even in strong vaping. Great feeling when you hold it because of its size and the rounded edges, while side charging port is also a plus.