The Uwell Caliburn G3 Pro Koko vape kit is a smaller, thinner version of the Caliburn G3 Pro. This kit boasts a simple design and can easily slip into your pocket, it’s built-in 1250mAh battery will last around a day between charges. Plus, its 5-35W variable output allows you to alternate between MTL (Mouth To Lung) and RDTL (Restricted Direct To Lung).