The Apple iPad Pro - 12.9" (4th Gen) comes with more power, functionalities, and an expensive keyboard. The new design and display allow for a quick refreshing display while scrolling or gaming and use of own iPad software, unlike previous iPads that used iOS.
iPad Pro (4th generation) - Wikipedia
Buy 12.9-inch iPad Pro Wi-Fi 256GB - Space Gray - Apple
iPad Pro 12.9-inch (2021) vs iPad Pro 12.9 (2020): Price, Specifications Compared
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Apple iPad dimensions – the complete list – Ebook Friendly
Apple iPad Pro - 12.9” (5th Gen) Dimensions & Drawings
iPad Pro 12.9 6th/5th/4th Stylus Pencil,1.5mm Palm Rejection Fine Tip Active Pen Compatible with Apple Pencil for iPad Pro 12.9-Inch 6th/5th/4th Gen Stylus for Drawing Sketching Pen White : Cell Phones
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Apple iPad Pro 12.9 (2018) - Full tablet specifications