The Switcher kit is a 220 watt dual 18650 device. The whole kit costs $89.99 or $99.99 (More On That In A Moment). The outside case of the device can be switched out to change the look and design. Those have to be purchased separately. The tank that comes with it is the NRG tank. We carry the GT4 coils along with the GT2 coils. The NRG is also compatible with the TFV8 Baby Beast tank and vice versa. Now the colors available are grey, silver, and yellow for $89.99. However, there is also an LED edition for $99.99. The colors available are red, blue, green/gold, and brown/gold.