http://www.innokin.com/itaste-vtr.html
Features in Brief:
Variable Voltage: 3.0 – 6.0 volts
Variable Wattage: 3.0 – 15.0 W
Short Circuit Protection;
RMS (root mean square);
Reverse Battery Protection Circuit;
Resistive Load Detection (Ohms meter);
ON/OFF battery switch;
LED Battery Power Display;
Low Voltage Warning;
Overtime Vaping Warning (10 second switch cutoff);
Battery safety protection (Vent holes);
High compatibility 510/eGo connector:
Built-in 3 digit display (Ohms meter, Volts /Watts, Atomizer voltage output)
Replaceable Battery: iTaste VTR supports 18650 batteries (unprotected)