“Found it. The manual isn’t on Pangyingo’s site anymore. Use this: [link to a PDF on a Russian server]”
Findings
However, if your computer is not recognizing the device, you may need to . Right-click the Start button and select Device Manager . Expand Mice and other pointing devices . pangyingo wireless mouse manual link
Is your mouse , or does it use replaceable AA/AAA batteries ? “Found it
: Use the provided USB-C or Micro-USB cable to charge the built-in 500mAh battery. A red light typically appears during charging and turns off when full. 2.4GHz Connection (Dongle) : pangyingo wireless mouse manual link
Click and select "BT5.0 Mouse" or "Pangyingo Mouse" from the discovered list. Click pair to finish the connection. Understanding the DPI and Button Layout