
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.
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
- Ka, K and X bands plus laser
- Voice and camera alerts
- 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
| Brand | Uniden |
|---|---|
| Model | R4w |
| Dimensions & fit | |
| Item Dimensions L x W x H | 4.5"L x 2.8"W x 1.1"H |
| Power & efficiency | |
| Power Source | Corded Electric |
| Voltage | 12 volts DC |
| Compatibility & installation | |
| Connectivity | Wi-Fi, Bluetooth, R/TACH app |
| Compatible Devices | Smartphone, iPhone |
| Included components | |
| Unit Count | 1 Count |
| Warranty & support | |
| Frequency Bands Supported | Ka, K, X |
| Warranty Description | 1 year |
| Other details | |
| Display Type | OLED |
| Laser detection | Yes (per title) |
| Alerts | Voice alerts, red light and speed cameras |
| Detection coverage | 360 degree awareness |
| GPS | Built-in |
| Mfr Part Number | R4w |
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.