Small enough to sit beside your monitor, quiet enough to forget it's on. Three speeds, from a barely-there breeze to a proper push of air on sticky afternoons. The head tilts up and down through a wide angle, and the front grille twists off so you can wipe the blades clean. It runs from any USB port, whether laptop, charger or power bank, on a 1.2 m cable. No batteries to swap and nothing to set up. Plug in, press once, carry on.