i Taste VTR is solid variable wattage & voltage vaping device with detailed finish. It features a rotational wheel & a protective skeleton to hold the tank inside. The voltage & wattage can be adjusted with the rotational wheel; the screen displays voltage or wattage & offers intuitive control over settings leading to more accurate performance. 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/e Go connector: Built-in 3 digit display (Ohms meter, Volts / Watts, Atomizer voltage output) Replaceable Battery: i Taste VTR supports 18650 batteries (unprotected): (batteries not supplied)