Fenix Mini uses a patented convection heating system. Very Safe Fully Isolated Air Path – Air Intake Is Directly Through The Food Grade Metal Path Directly To The Chamber, allowing the user to enjoy a pure, great tasting vapor on the go. With an adjustable temperature OLED screen ranging from 160°C to 221°C in one degree increments, the Fenix Mini excels in precise temperature regulation. 40 Minute Continuous Use Battery Life, fast heating time: 20-30 seconds, 40 minutes continues use battery life, USB Charging Port Under Device, 4-Minute Safety Auto Shut Off, Recharging Time: 2 Hours, weight only 135 grams.