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Uniden

Uniden R4W Laser and Radar Detector

  • Ka, K and X bands, plus laser
  • 360 degree awareness listed
  • Built-in GPS, Wi-Fi and Bluetooth
  • Voice alerts, red light and speed camera alerts
  • R/TACH app for iPhone and smartphones
  • OLED display, 12 volt DC
  • 4.5 x 2.8 x 1.1 inches
  • 1 year warranty

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A compact laser and radar detector covering the common police radar bands, with GPS, voice alerts and an app. The listing does not itemize what ships in the box.

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ASIN: B0F1DWXMYPModel: R4wCategory: Radar Detectors

Overview

Not a bare-bones radar detector, this Uniden lists laser detection, GPS, Wi-Fi and Bluetooth alongside the three radar bands. Alerts arrive by voice and on an OLED display, and an app handles setup from a phone.

Band coverage is the clearest strength, and the smaller body suits a tight windshield. Camera warnings help in city driving. The listing offers no accessory list and no cable length.

Who it's for

City and highway drivers who like voice alerts and camera warnings will make use of the GPS and the app. Anyone who wants directional arrows named in the specs, or a stated accessory kit, should check a different listing.

Pros and cons

Pros
  • Ka, K and X bands plus laser
  • Voice and camera alerts
Cons
  • Accessories not itemized
  • Cable length missing
  • Directional arrows not named

Performance notes

Detection depends on the antenna and how it treats each radar band and laser. GPS lets the unit use stored locations for red light and speed cameras, so database freshness affects those alerts. The app handles settings over the phone link.

Where it stands among radar detectors

  • #9 most-searched brand and model of the 21 radar detectors lines we track (by search demand, not sales).

From the specs of the 23 radar detectors we list; not a test result.

Specifications

BrandUniden
ModelR4w
Dimensions & fit
Item Dimensions L x W x H4.5"L x 2.8"W x 1.1"H
Power & efficiency
Power SourceCorded Electric
Voltage12 volts DC
Compatibility & installation
ConnectivityWi-Fi, Bluetooth, R/TACH app
Compatible DevicesSmartphone, iPhone
Included components
Unit Count1 Count
Warranty & support
Frequency Bands SupportedKa, K, X
Warranty Description1 year
Other details
Display TypeOLED
Laser detectionYes (per title)
AlertsVoice alerts, red light and speed cameras
Detection coverage360 degree awareness
GPSBuilt-in
Mfr Part NumberR4w

Frequently asked questions

What comes in the box with the Uniden R4W?

The listing counts one item, the detector. Mounts, power cables and other accessories are not itemized.

Does the Uniden R4W detect X band?

Yes. The listed bands are Ka, K and X, and laser detection is named in the title.