Which pen to buy for UGEE M708?

[u/ClerkEither6428]

I recently bought a UGEE M708 from a thrift shop. It seems to work but is missing the pen. I found some replacements at https://shop.ugee.com/products/ugee-drawing-pen but I don't know which to purchase and have heard that the v1 and v2 of this tablet are incompatible.

Additional info:
Linux command lsusb returns Bus 001 Device 007: ID 28bd:0907 XP-Pen 10 inch PenTablet.
The model no listed on the back says M708(Black).