Kanger KBox comes with several wattage levels. Choose any wattage level for you. Wattage from 8W to 40W. The arc side is comfortable while holding it in hand. Kanger’s logo is hollowed on it, showing the color of battery inside. Change a lithium battery, you will change the “color” of Kanger logo. Get kangertech KBOX from Heaven Gifts to enjoy cloud vape.