No. The showerhead doesn't have an in-built pump.
How does the shower head function?
It functions as an on/off switch for the water flow. To use it, you need to connect it to the HOTTAP system. Water will flow through the HOTTAP either from a mains tap or the Joolca pump, which pushes the water through the system. The shower head simply controls the water flow, allowing you to turn the water on and off as needed.