These cat toys are an integral part of a paranormal investigators inventory of ghost hunting equipment.
 
The phenomenon of cat balls lighting up without any apparent movement is often attributed to the interaction between the ball's internal mechanisms being influenced by spirits/ghosts. These can include temperature changes, electromagnetic fields, or static electricity.
 
For best results place the ball in front of a camera with audio to see and hear when the alerts happen when asking questions, to coincide with potential evidence.
 
The built-in battery lasts up to around 24 hours of continuous flashing. Unfortunately, it is not replaceable.