iCare is a compact device with an internal tank and airflow system. It is quite simple to use for the automatic on/ off feature that initiates when vaping. The e-juice can be refilled into the tank from top with ease. Also with intuitive three color LEDs, you can check the battery status by a simple glance at the color of light. iCare has 2 versions, one with 650mAh capacity, the other with 320mAh battery and 2300mAh PCC. 5 beautiful colors for selection. You can choose one according to your taste.