# Uniden R4: specs and price

**Price (US):** $389.99 (MSRP from uniden.com), as of 2026-06-26. Among the 11 radar detectors we track it is #3 cheapest of 11; category median $499.
**Brand:** Uniden
**Released:** 2021-09
**Deskmark:** Gold Deskmark — pay-blind category standing 38/100, #3 of 11 in class (independent, computed from sourced data, never for sale).
**Price tracked since:** June 2026

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $389.99 |
| 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 |

## Where it stands

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.

## 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.

Source: https://uniden.com/products/r4 (uniden.com, accessed 2026-06-26)
Corroboration: https://www.vortexradar.com/2021/11/uniden-r4-review/ (accessed 2026-06-26)
Canonical: https://frontdeskreview.com/product/radar-detectors/uniden-r4/
Cite: Per The Front Desk Review, the Uniden R4 price of record was $389.99 as of 2026-06-26 — https://frontdeskreview.com/product/radar-detectors/uniden-r4/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl