- Ultra Slim : Only 1.4cm for pen diameter
- Built-in Mini Fans: Accelerating internal cooling and make filament frozen in the air more fast.
- Individual Motor: Mini motor,it can work for 103 hours continuously.Adopt aviation technology,extend its’ life span
- Automatic Operation: Loading/Unloading filament automatically
- Two pattern swith easily: Old 3d pen need power off,restart 3d pen to switch PLA/ABS mode.D7 can switch PLA/ABS mode anytime,no need restart.
- 6 Levels speed adjustable: D7 has 6 levels speed you can adjust