The functionality of the Yocan Evolve C is very simple. The base is just a 650mAh battery with a single button. The top has a 510 thread, and this connection is used for both attaching your atomizers and charging it.
Yocan Evolve C Atomizer
There are two atomizer options. The first is a single quartz coil for thicker waxes and concentrates. The second is a tank that you fill from the top with oils or e-liquids.
Once your atomizer is attached to the base, a cover slides over the top. This is only a decorative piece.
Yocan Evolve C Tips
To actually use the Evolve C, you just click the button five times to turn it on and then press and hold that button to take a draw.