1. Patented product, imitate must pay the law duty 2. Patent No.: 200630164964.6 200620123752.6 3. Metal shape4. Glass mouthpiese5. 400W ceramic heating element6. Borosilicate glass insulator7. Blue, green and red lights8. Dural filtered inlet air9. hand free glasspiece10. digital temperature control11. Voltage: 220-240V/50-60Hz or 110-120V/50-60Hz