U-Key Vaporizer (Customize Image Design Version) is a compact and portable battery mod by Dazzvape, featuring U-shaped appearance. It is powered by 350mAh built-in battery. The U-Key has 10 seconds preheating function and smart memory function. With the single button, it is easy to operate. It features variable voltage: 2.8V/3.2V/3.6V/4.0V, meeting your different vaping demands, and the LED indicator lights can display battery level. Multiple protections are applied to avoid potential risks. The Dazzvape U-Key Vaporizer is compatible with all 510 thread cartridges and supports both 0.5ml and 1ml of atomizer capacity. Available in Black, White, Blue, Gray, Red, Christmas Red.