iPad Pro 2015, 2017, 2018, 2020 in 9.7' ', 10.5' ', 11' 'and 12.9```
In 2015, Apple brought the first iPad Pro to market. With the iPad Pro, at that time, above all, business customers should be addressed, which has been used only on the basis of the performance only notebooks.
The iPad Pro appeared in two sizes 9.7 inches as well as the big 12.9 inches.
In 2017 already the 2nd generation of the coveted iPad per models came. Here, a slightly larger "small" iPad Pro with 10.5 inch screen diagonal and proven 12.9 inches each introduced with more power.
At the end of 2018, the 3rd generation appeared. The small per model in 11 inches and the larger in 12.9 inches. Also integrated have the iPads Face ID whereby the Touch ID of the predecessor models has been replaced.
Optically almost equivalent, except the camera, 2020 the 4th generation was also introduced in 11 inches and 12.9 inches.