The invention relates to a portable spray device (1) for ejecting a fluid, in particular an agricultural formulation, comprising a container (2) for receiving the fluid, a pump (15) which is fluidically connected to the container (2) in order to discharge the fluid out of the container (2), a spray pistol (21) which comprises a spray opening (27) and an electrically actuatable application valve (20) for opening and closing a passage to the spray opening (27), and an application line (17) which establishes a fluid connection between the pump (15) and the spray pistol (21). The spray device (1) according to the invention is characterized by a pressure sensor (19) which is arranged in the application line (17) for detecting the fluid pressure in the application line (17) and an electric controller (28) which is coupled to the application valve (20) and the pressure sensor (19) so as to transmit data and by means of which an electric control signal for opening the application valve (20) for a specific time interv
