Introducing special edition of DAZZVAPE U-key oil vaporizer with five stylish patterns to fit your style. U-key is an excellent travel-sized device with a convenient key fob design for those into the cartridge style of vaping. It incorporates 10 seconds preheating, variable voltage settings and smart memory function which can memorize the current voltage before powering off to ensure that the voltage remains unchanged when restarting the device. The U-key has an integrated 400mAh rechargeable battery and supports all 510 thread cartridges. Small while efficient, an ultra-compact and portable vaporizer gives you the purest taste.