Specificationsmsk tecs e-cig oled screen 1.can torch 2.3.0v to 6.0v , OLED screem 3.3w to 15w 4.Variable voltagebest 2013 msk oem product electronique *ette tecs with OLED screen The new oem product e-cig tecs with new design and function. With the new OLED screen, which you choose to use 1pc 18650 battery, 2pcs 18350 batteries, or only 1pc 18350 battery 1.Working voltage from 3.0V to 6.0V2.Can test Atomizer's resistance, and Display voltage, power3.Fit atomizers with resistance 1.5~5.0ohm4.Protected function5.Output power 3W?15W6.Variable voltage7.Only RMS mod8.can take off the top ring, then the msk tecs can fit most of the atomizer on the market9. when the tecs is short circuit, it will show "short". 10.the OLED screen can show the battery capacity and the smoking actually smouths 11.when the tecs working the OLED can take off save the battery power 12. the newest function is than can torch . it's very convenience .