Yocan Evolve-D Kit utilizes a unique coil technology called Dual Pancake Coil. It was designed to ensure an efficient yet even distribution of heat. With this kind of coil, you are certain to achieve only the best vapor flavor. Features :· Battery Type: Built-In 650mAh· Dual Pancake Coil Technology· Dual Purpose Cap· Spacious Dry Herb Chamber INCLUDES :· 1 x Yocan Evolve-D Vaporizer· 1 x Evolve Battery· 1 x Evolve-D Dry-Herb Atomizer· 1 x Replacement Evolve-D Spiral Coil· 1 x Cleaning Brush· 1 x USB Charger· 1 x Gift Box