The Kamry Digital 200W Box Mod is a very elegant looking number. It can be set from 7 to 200 watts. The Kamry Digital 200W can handle an atomizer resistance range between 0.15 and 3.0 ohms. The device features easy to read LED digital display. The unit takes three 18650 sized batteries Simple convenient and quick operation. Built-in Mic usb charging, directly using the usb cable to charge there is no need to remove the batteries. 510 connection and Removable adapter ring with 4 vent holes. Available in 3 Colours. For ADVANCED USERS ONLY