Where can I find Cubo Ai/Cubo Ai Plus' serial number?

Cubo's serial number starts with CQ (Cubo Ai) or CB (Cubo Ai Plus) and can be found on the bottom of the camera. You'll need to remove Cubo Ai/Cubo Ai Plus from the stand to see the serial number. Alternatively, the serial number can also be found on the box sleeve.