The gorgeous carbon fiber wrapped stainless steel mod from Aspire is the Mercedes of Mod's. It features numerous options not found on mechanical mods, such as an illuminated stainless steel button, 5 click on/off safety features, LED fuel gauge indication (blue=greater than 3.5V, yellow=below 3.5V), over-discharge protection circuit, an atomizer short circuit protection. There are also vent holes in the bottom of the battery cavity for extra safety. Finished in beautiful black, gray, red, or blue carbon fiber. You will find a scratch off unique serial number on the cool tube it comes packaged in to verify it's authenticity on Aspire's site.