Herb stick Pen Features: 1. Steel mesh window can dissipate heat effectively to ensure vaporizer surface not too hot. 2. 6 temperature settings, 6 different colors LED indicate different temperature. LED status lights 3. Premium 2200mah battery support 100minutes working. 4. Al Alloy body, stainless steel leaves chamber. 5. Fresh and cold air flow. 6. Silicone mouthpiece ensures an optimum temperature when using.