The striking features of sigelei 75w box mod features a 75 watt chip with temperature control. It also famous for its variable Wattage and OLED Screen Display.It was powered by single 18650 battery and compatibility 510 thread . Best deal check here : http://www.vaporizersdistributor.com/sigelei-75w-box-mod-with-temperature-control-p-89.html , 7% off,free shipping and 100% genuine. Sigelei 75W TC Temp Control Mod Features Stainless Steel Construction Max Wattage to 75watts With Temperature Control variable Wattage OLED Screen Display Spring loaded Works well with 510 thread Super responsive click-back buttons Reads down to 0.1 resistance. Mini USB charge port.