9 Apparatus and instruments for the recording, transmitting, reproducing or processing of sound, images or data; downloadable and recorded software for booking, scheduling, invoicing and managing professional video-calls; computers and computer peripherals; downloadable computer software applications for booking, scheduling, invoicing and managing professional video-calls; memory and microprocessor cards being computer hardware, printed electronic circuit cards, printed circuits, integrated circuits, computer keyboards, USB sticks being blank USB flash drives, computer hardware, interfaces for computers; recorded software for booking, scheduling, invoicing and managing professional video-calls; recorded games software, computer screensavers software, recorded or downloadable, downloadable game software, memories for computers, microprocessors, modems, computer monitors, recorded computer program that monitors booking, scheduling, invoicing and managing professional video-calls; smartwatches, laptops, smartphones; processors, namely, central processing units (CPU), recorded computer programs for booking, scheduling, invoicing and managing professional video-calls; recorded operating system programs for computers; downloadable computer programs for booking, scheduling, invoicing and managing professional video-calls; holders adapted for portable computers