Similar to the eGo-T in terms of design, but the eGo C-Twist allows you to change voltage as desired. Available in many colors to suit your personal preference. This is the most compact and slim device making it very portable and easy to bring on the go. The battery has a high capacity allowing you to vape for hours just off one single charge. The eGo C-Twist has a spin dial at the bottom of the battery with a voltage output from 3.2 volts - 4.8 volts; higher the voltage, higher amount of vapor. Note: There is always an inherent risk when using any rechargeable batteries at anytime and under any circumstances. ElementVape.com and any of ElementVape.com’s parent and subsidiary companies are not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making. When working with Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable cells, please be cautious and carefully use as they are very sensitive to charging characteristics and may explode or burn if mishandled. Please make sure that you have great knowledge on all rechargeable batteries before you use them. Always charge batteries at the clean and fire-proof surface. Never leave charging batteries unattended. If you see that there are visible damages on the batteries, please do not use. Always keep, store and transport the rechargeable cells in a safe, non-conductive container in controlled environment.