(There are quite a few companies selling the Itaste. Please make sure that you get the new ego 510 thread pattern version of the Itaste. The old version has the magnetic connector will cause more problems than the newest version without the magnet.) The iTaste VV is the only intelligent electronic cigarette on the market, which can detect the resistance of the different cartomizers and recommend a proper voltage range accordingly. Users can adjust the voltage from 3.3-5.0V. The iTaste VV continues to use ON/OFF battery safety switch, LED Battery capacity display, Pass-through.. There are 3 colors available: Chameleon, black and white. Refreshing appearance design The iTaste VV adopts ergonomic design and is the first square-sized e cigarette, its shiny appearance and harmonious structure deliver the sense of fashion and luxury. The iTaste has been given special Zinc alloy treatment, which symbolizes nobility and delivers joy. The iTaste VV for cartomizers The new Itaste comes with a 510 Ego style connector and is compatible with all 510 cartomizers and clearomizers. The new Itaste comes with XL clearomizers , a clear mega cartomizer, and a shorty dual coil cartomizer. Long live energy, high power discharge The iTaste VV e-cigarette uses built-in 800 mAh polymer Li-Ion rechargeable battery with high power discharge. Puffer accounter The iTaste VV electric cigarette tells how many puffs are remaining with its unique “puffer accounter “! 10 seconds cutoff If the button is held down for 10 seconds or longer, the iTaste VV personal vaporizer will shut itself off until the button is released. In case that users forget to turn it off before storing it in your pocket or bag, which prevents the device from activating. Short Circuit/Atomizer Protection Short Circuit/Atomizer Protection protects the iTaste VV against shorted tank atomizers/cartomizers. Over-Discharge Protection The iTaste VV monitors the battery voltage and will automatically turn off when the battery is discharged. Low Voltage Warning When the iTaste VV y battery voltage is lower than 3.3V, the red LED light will flash 8 times and stop producing vapor. After continuous warning for 3 times, Infinity goes to off, then users need to recharge to continue vaping.