The Vinci by VooPoo is compact and convenient. With a 1500 mAh internal battery, and 5.5 ml pod, adjustable wattage and voltage. The Vinci also offers an auto draw or push fire button draw. (Meaning if you have it in AUTO mode all you need to do is just inhale on the mouth piece and it will begin to vaporize for you). Or if you choose you can press the fire button to begin the vaporization process. You can even set it in both mods at the same time so which ever option you choose works at that particular inhale. The OLED Screen on the Vinci makes it easy to set your preferred wattage and change any settings you would like however the new GENE chipset will auto configure your wattage for you if you desire.