SFP+ Connection between XS716T and XR700 - Which Caable?

What is the distance between these two devices? 

On a short distance (1...3...5...7...10 meters), you can consider SFP+ DAC (10G-DAC) cables, like SFP DAC - Direct Attach cables for 10 Gigabit connections available from Netgear as well as second source (use a price search engine).

On longer distances, you need a pair of SFP+ fiber modules with the appropriate and matching preassembled fiber patch cable, for keeping it simple look for Multimode fiber cables and modules which are fine for up to some hundred meters. On even longer distances, you look into single mode fiber cables and modules.