Yocan Evolve-D Plus Dry Herb Vaporizer Dry herb just got easier! The Yocan Evolve-D Plus Kit features a pen-style portable vaporizer designed for dry herb. The Yocan Evolve-D Plus features a portable and lightweight design with a built-in 1100mAh battery. The Yocan Evolve-D Plus features a functional mouthpiece that may be pushed to move the dry herb closer to the coil and also much more easier to clean after use. The Evolve-D Plus features a large heating chamber and utilizes dual coil atomizer heads for improved heating and vapor production. The base of the battery may be removed to reveal a storage jar for extra dry herb. The Evolve-D Plus may be charged via the micro USB charging port. Please note, this product is NOT compatible with any e-Liquid. This product may only be used with dry herb material (not included).