The PRO-58 model includes a small LED screen that displays information in a blue text depending on detection and prioritizes certain alerts if there is a lot incoming at one time. It is worthy noting however that the Whistler PRO-58 only includes tone alerts, it does not use real voice alerts like higher end models.
The Whistler PRO-58 model includes different audio alert features such as a unique stay alert mode that chimes every 30 to 60 seconds, 3 city modes and a highway mode, and quiet and auto quiet modes for times when the user requires the device to be silent. The device city modes are designed to help eliminate false radar detections in a highly populated area; some false detections can usually be made from automatic door openers installed in nearby stores which use the X band radar emission and the city modes turn this detection band off.
Whistler claims that all PRO radar devices have a unique POP detection mode; modern radar guns can be set into a special POP mode allowing the device to be used without detection however all of Whistler's PRO model detectors including this one will still alert the user to said detection mode.