Important note: The pods are compatible only with the Caliburn Explorer device to purchase the device from here. Dual pod with two tanks and two coils separated in one pod to allow you to add two different flavors. Examples to benefit from the dual pod: You can add a cool mint flavor and add a flavor you prefer in the other tank. You can add tobacco in the tank and another flavor in the other tank. The pod capacity is 4 ml, (2 ml for each tank) you can add a different flavor separately in each tank. The box contains two empty pods.