Uniden
Uniden R8
$749.99
Released 2021-11
Best Radar Detectors · head-to-head
Uniden R8 vs Cobra RAD 700i
A sourced, side-by-side comparison. Cobra RAD 700i is cheaper at $259.95. Every spec and price links to its source.
Cobra
Cobra RAD 700i
$259.95Cheaper
Released 2023-09
Which is better: the Uniden R8 or Cobra RAD 700i?
The Cobra RAD 700i wins 1 of the 1 specs we compare head to head; the other wins 0. The Cobra RAD 700i is the cheaper at $259.95. The Cobra RAD 700i both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Uniden R8 | Cobra RAD 700i |
|---|---|---|
| US price | $749.99 MSRP from uniden.com | $259.95 MSRP from cobra.com |
| Brand | Uniden | Cobra |
| Released | 2021-11 | 2023-09 |
| Radar bands | X, K, Ka, Laser | X, K, Ka, Laser |
| Lidar detection | Yes | Yes |
| Gps built (in) | Yes | Yes |
| Directional alerts | 360° directional arrows via dual-antenna (front + rear) | — |
| Range rating | Extreme long range; dual Blackfin DSPs; dual LNAs | Premium long range; LaserEye front and rear laser detection |
| Display type | Multi-color OLED with voice alerts | 5-color OLED (customizable) |
| Bluetooth app | Bluetooth; R/TACH app | Bluetooth; Drive Smarter app (CarPlay & Android Auto) |
| Auto learn filtering | GPS auto-lockouts for stationary false alerts | AutoLearn Intelligence GPS lockouts; TSR traffic sensor rejection |
| Mount type | Dual suction cup windshield mount | EZ Mag Mount (magnetic windshield) |
| Warranty years | 1 | 3 |
| Weight (oz) | 7.4 | 6.4 |
| Dimensions | 4.88" L x 3.85" W x 1.52" H | 5.13" D x 3.13" W x 1.25" H |
Sources — Uniden R8: uniden.com (verified 2026-06-26). Cobra RAD 700i: cobra.com (verified 2026-06-26).
What's the difference between the Uniden R8 and Cobra RAD 700i?
Where the two actually differ on the specs we track (8 of 12). Matching specs are omitted.
- Range rating: Uniden R8 Extreme long range; dual Blackfin DSPs; dual LNAs vs Cobra RAD 700i Premium long range; LaserEye front and rear laser detection
- Display type: Uniden R8 Multi-color OLED with voice alerts vs Cobra RAD 700i 5-color OLED (customizable)
- Bluetooth app: Uniden R8 Bluetooth; R/TACH app vs Cobra RAD 700i Bluetooth; Drive Smarter app (CarPlay & Android Auto)
- Auto learn filtering: Uniden R8 GPS auto-lockouts for stationary false alerts vs Cobra RAD 700i AutoLearn Intelligence GPS lockouts; TSR traffic sensor rejection
- Mount type: Uniden R8 Dual suction cup windshield mount vs Cobra RAD 700i EZ Mag Mount (magnetic windshield)
- Warranty years: Uniden R8 1 vs Cobra RAD 700i 3
- Weight (oz): Uniden R8 7.4 vs Cobra RAD 700i 6.4
- Dimensions: Uniden R8 4.88" L x 3.85" W x 1.52" H vs Cobra RAD 700i 5.13" D x 3.13" W x 1.25" H
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Uniden R8
Across 3 testing outlets, the Uniden R8 is consistently rated as one of the best long-range radar detectors on the market, prized above all for its major detection-range and sensitivity gains over its predecessor, the Uniden R7. Reviewers highlight its class-leading OLED display and advanced laser-gun identification, and independent range testing found it consistently outperforming the R7 across Ka and K bands, including with filters enabled. No outlet reported significant flaws, though one noted that immunity features like SPECTRE aren't foolproof and that some useful settings ship off by default. (3 sourced reviews, 3 lab-tested.)
Praised: Significant detection range/sensitivity improvement over the Uniden R7 (roughly 3-4 dB gain, beating the R7 across Ka and K bands); Regarded as one of the best (if not the best) radar detectors for highway driving; Largest, easiest-to-read OLED display of any radar detector tested.
Flagged: SPECTRE (radar-detector detector) immunity, while present, is not considered foolproof; Some situational-awareness-related settings ship off by default and require manual activation.
Cobra RAD 700i
No sourced tester review yet.