The Sigelei Kaos Spectrum is a gorgeous Mod, as well as a very high quality device. The main attraction of this Mod is the Lights, which are just as good as the Mod itself. In a industry that is constantly evolving and the competition is stiffer than ever, Sigelei really did a excellent job on this one. I would say this is one of the best devices on the market right now, in terms of quality and performance. With a wattage range of 10W-230W and a resistance range of 0.1Ω-3.0Ω you can pretty much use any Tank you want with this. We highly recommend the Kaos Spectrum by Sigelei if you are looking for a new Mod. 123 Size： 88 x 45 x 30mm Material： Zinc Alloy Screen： 0.96〞TFT color screen Power range：10W-230W Temperature Range：100℃-300℃ / 200℉-570℉ Input Voltage： 6.4V-8.4V Output Voltage： 1.0V-7.5V Maximum Output Current： 35A Battery： 2*18650 Operating Mode： POWER/SS/Ti1/Ni200/TCR Resistance Range： 0.1Ω-3.0Ω USB charge： DC 5V/2.5A USB Upgradeable