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. 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.