Dear friend, this is the headset + mouse set, the mouse is a gift, here are 7 options, the mouse is the same (MMR3), the headset has 3 styles (G2000/G9000/G4000) Difference between G2000/G9000/G4000: 1, the style is different, the volume (G2000> G9000/G4000) 2, the socket is different, G9000 has 2 s...
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