The Zinter Pro II is not a Zinter Pro 1 Upgrade - its a whole new machine.
The Key Features are:
- 300 x 300 x 300 Build Area
- Unique Active Cooling system for better overhangs
- Game changing control of flexible filaments
- Locking Build area & Filament bay doors
- Fully enclosed build chamber
For more details have a look at the Zinter Pro II product page on zinter.com