Uniden · Updated June 2026
Uniden R4: price, specs & release date
The Uniden R4 costs $389.99, #3 cheapest of 11 radar detectors (median $499). It earns a Gold Deskmark — 38/100 pay-blind standing, #3 of 11 in class.
Verified Jun 27, 2026 · figures linked to their source in the table below
Uniden R4, released 2021-09. Every price and spec below is linked to its source and dated — no guesses.
Source: uniden.com verified ✓ corroborated verify in ledger
Is the Uniden R4 a good buy?
At $390, the Uniden R4 is #3 cheapest of the 11 radar detectors we track, where the median is $499. On the spec sheet, its warranty years of 1 is the lowest of the 11, and its weight of 5.3 oz is the lowest of the 8.
Specifications
| Price (US) | $389.99 MSRP from uniden.com |
|---|---|
| Brand | Uniden |
| Released | 2021-09 |
| Radar bands | X, K, Ka, Laser |
| Lidar detection | Yes |
| Gps built (in) | Yes |
| Directional alerts | — |
| Range rating | Extreme long range; single-antenna with dual LNAs; Blackfin DSP |
| Display type | Multi-color OLED with 2 display modes and auto-dimming |
| Bluetooth app | Bluetooth; R/TACH app |
| Auto learn filtering | GPS auto-lockouts for stationary false alerts |
| Mount type | Windshield suction cup mount |
| Warranty years | 1 |
| Weight (oz) | 5.3 |
| Dimensions | 4.33" L x 2.72" W x 1.16" H |
Source: uniden.com (verified 2026-06-26) · corroborated by vortexradar.com. Price $389.99 from uniden.com. Release September 2021 per Vortex Radar. Weight 5.3 oz from spec data. No directional arrows — single-antenna per Vortex review.
Is the Uniden R4 worth it vs cheaper radar detectors?
Uniden R4 against its closest cheaper and pricier radar detectors on the specs that matter — every value sourced. See all 11 ranked →
| Product | Price | Radar bands | Lidar detection | Gps built (in) | Range rating | Display type |
|---|---|---|---|---|---|---|
| Uniden R4 this | $389.99 | X, K, Ka, Laser | Yes | Yes | Extreme long range; single-antenna with dual LNAs; Blackfin DSP | Multi-color OLED with 2 display modes and auto-dimming |
| Escort MAX 4 | $349.95 | X, K, Ka, Laser; MultaRadar MRCD/MRCT; Mestafusion | Yes | Yes | Long range; single-antenna M4 platform with dual LNAs | Multi-color OLED |
| Radenso DS1 | $399.99 | X, K, Ka, Laser; Gatso; MultaRadar MRCD/MRCT | Yes | Yes | Extreme range; single front-facing horn | Full-color 1.6" OLED with 8 selectable colors and auto-dimming |
Frequently asked questions
How much does the Uniden R4 cost?
The Uniden R4 has a US price of $389.99 (MSRP from uniden.com), as of 2026-06-26.
How does the Uniden R4 compare on price?
At $390, the Uniden R4 is #3 cheapest of the 11 radar detectors we track, where the median is $499.
When was the Uniden R4 released?
The Uniden R4 was released 2021-09.
What are the Uniden R4's key specs?
Uniden R4 (Uniden): radarBands X, K, Ka, Laser, lidarDetection Yes, gpsBuiltIn Yes, rangeRating Extreme long range; single-antenna with dual LNAs; Blackfin DSP, displayType Multi-color OLED with 2 display modes and auto-dimming. Full sourced spec sheet verified 2026-06-26.
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Compare with
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- Escort MAX 4 $349.95
- Cobra RAD 700i $249.95
Step up
- Radenso DS1 $399.99
- Cobra DualPro 360 $449.95
- Valentine One Gen2 $499
- Escort MAX 360c MKII $529.95
- Uniden R8 $749.99
- Escort Redline 360c $799.95
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