The Eleaf Lexicon Kit With “Light Show” outline design and seven different color LED lights, Lexicon kit is quite elegant and has a compact profile for vaping on the go. A 510 connector at the top is centered to allow for atomizers. On the screen, you will see indicators for current mode, power/temperature, coil resistance, output voltage, amperage and two battery indicators for each 18650 cell the Invoke uses. The batteries are loaded by opening a flip door at the bottom for a hassle free swap process. Available in TC and VW modes for your choice.