The Sigelei Spark 90W TC is a fully featured compact variable wattage and tempreature control box mod that outputs a class leading 90W alongside a temperature control module that makes for a small yet very capable device. The Spark features an output range of 10 to 90W, giving it what is currently class leading output for the size. Alongside the capability to effectively fire and handle most Sub-Ohm Tanks in today's market, the Spark integrates Sigelei's temperature control module that can be utilized with Ni200 Nickel and Titanium heating elements from 212 to 572 degrees Fahrenheit. The OLED Screen features Sigelei's signature quadrant based display that arranges atomizer resistance, output power, output temperature, output voltage and battery life neatly.