The R4 continues Uniden’s tradition of leading innovation. Featuring extreme long-range performance, a Blackfin® DSP (Digital Signal Processor), and visual and voice alerts on an OLED display. Also, it has Bluetooth, GPS, R/TACH app support, our custom speed and red-light database, etc. Also, the R4 features Auto Learn which greatly reduces false alerts over time giving you the quietest ride. With our exclusive proprietary technology, the R4 boasts stellar performance. When you need the best, and none of the fluff, Uniden’s R4 puts you miles ahead.

• BUILT-IN GPS WITH AUTO MUTE MEMORY
  The R4 can remember and automatically mute false alerts (such as retail store door alarm), along your routes so you never have to listen to the same false alert twice.
• MULTI-COLOR OLED DISPLAY
  An easy-to-read display allows for more useful information to be displayed at once, improving your overall situational awareness.
• VOICE ALERTS
  Voice alerts provide clear communication allowing for hands-free operation. Voice alerts are programmable to fit your style so you can keep your eyes on the road with no distractions.
• ADVANCED K/KA BAND FILTERING
  The R4 has the best K/KA Band filtering resulting in fewer false alerts from blind-spot monitoring and collision avoidance systems.
• RED LIGHT/SPEED CAMERA ALERTS
  Pre-loaded Red Light and Speed Camera locations with free database and firmware updates ensure your radar detector will always be up-to-date.

California Prop 65 Warning