A: Hi Joyce,
Thank you for reaching out to us! I'm sorry to say that the Replacement Coil Head for the iSmoka has become more difficult to stock, and we purchase the resistance options available to us, but, at this time, we can only stock the 2.5 ohm coil head. The 2.5 ohm coil is working at the same wattage (net power) at 3.5V as the 1.8 ohm coil is at 3V, which is 5 watts. The devise you are using does not go below 5W.