Hey! I am searching for the driver of a TedGem Gaming Mouse

[IslandSnake]

...because I don't have the driver disk and the additional mouse buttons don't work without it

Mouse model should be this one:
http://www.amazon.de/TedGem-Beleucht.../dp/B07V56FDLM

System is Win10

Model No. on the underside of the mouse is SI-989S

Thank you all in advance for any help!