What is the voltage of the plant watering kit pump?

OvO

I purchased this kit and would like to know more detailed data:D

Pearl

https://www.elecrow.com/download/Elecrow_Watering_Kit_User_Manual.pdf

https://www.elecrow.com/dc-diaphragm-pumps-for-arduino-automatic-smart-plant-watering-kit.html