What is the maximum DPI of the included gaming mouse, and how many programmable buttons does it have?

The included wired M616 gaming mouse supports up to 10000 DPI and has 6 programmable buttons.

How many onboard macro keys does the keyboard have, and can they be used without extra software?

The keyboard has 4 onboard macro keys (G1 to G4), and they are programmable to work on the fly without any additional software.

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Redragon S141 Gaming Keyboard & Mouse Combo, 98 Keys K515 Wired RGB Membrane Keyboard and 10000 DPI Wired M616 Gaming Mouse Bundle