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Prices may varyThis product ranks #12 of 29 in Dash Cam.Three above it ↓
Last reviewed June 22, 2026
TL;DR Daytime plate legibility unconfirmed, no independent community footage comparison found at time of review; Rexing specs four 1080p cameras (front, rear, and both sides). Night vision: independent footage comparison not available at time of review (each camera has IR night vision, but only a sponsored review confirms it works). Parking mode is a built-in 360 motion monitor across all four cameras, motion/collision-trigger with no buffered pre-record; the Smart Hardwire Kit is included in the box. Supercapacitor design (no lithium battery). FCC assumed; no UL/ETL electrical safety certification confirmed.
The R4-RD is a 4-channel "all-around" dash cam: four 1080p cameras covering the front, rear, and both sides of the vehicle behind 170° lenses. Coverage, not resolution, is the point · the surround view catches side-swipes and parking-lot scrapes a single front camera misses, but every channel is 1080p rather than 2K or 4K. No independent community footage comparison confirming daytime plate legibility or night-vision result was available at time of review, so those are manufacturer claims; the one third-party review located is a sponsored sample. Each camera adds IR night vision (four infrared lights). The built-in 360 motion parking monitor records across all four cameras on motion or impact, powered by the included Smart Hardwire Kit, with an OBD auto-shutoff to limit car-battery drain; no buffered pre-event recording is documented. The supercapacitor design carries no lithium battery, removing the hot-car battery-degradation failure mode. Wi-Fi handles clip transfer via the Rexing Connect app, though the band is not stated and the app has documented connection complaints across the line.
Best match for drivers who want full surround coverage in one kit · front, rear, and both sides · and value the included hardwire kit plus the supercapacitor for easy, hot-car-safe parking surveillance. Skip it if maximum plate legibility is the goal: 1080p on every channel reads plates less reliably at distance than a 2K or 4K front camera, and the R4-RD's footage is not yet backed by independent community testing. A higher-resolution front cam, or Rexing's own dual-4K R88, suits a buyer chasing sharp plates over surround coverage.
No PPE is required for installation or normal use. The supercapacitor design contains no lithium battery, removing the thermal-runaway disposal concern. The device qualifies for standard e-waste drop-off (Best Buy, Call2Recycle); no manufacturer take-back program is documented. No independent UL or ETL electrical safety certification was located for the R4-RD; FCC radio-emissions compliance is assumed for a US-market wireless device. No California Prop 65 warning is documented on the manufacturer listing.
The R4-RD uses four 1080p cameras to record the front, the rear, and both sides of the vehicle at once. That surround coverage is its main reason to exist · it captures angles a single front camera or even a front-plus-rear pair cannot, which matters for side-swipes, parking-lot scrapes, and door dings. The trade-off is resolution: every channel is 1080p rather than 2K or 4K.
No. The R4-RD uses a supercapacitor instead of a lithium-ion battery, which removes the battery-swelling and overheating risk that affects lithium dash cams parked in hot cars. The energy store buffers power for safe shutdown; the camera runs off vehicle power and, in parking mode, off the included hardwire kit.
Yes, the Smart Hardwire Kit is included in the box. It powers the built-in 360 motion parking monitor, which records across all four cameras when motion or an impact is detected while the car is parked. The hardwire connection includes an OBD auto-shutoff to help prevent draining the car battery. The monitor is motion/collision-triggered; no buffered pre-event recording is documented.
Each camera records 1080p with IR night vision (four infrared lights per camera). No independent community footage comparison confirming daytime plate legibility or night-vision result was available at time of review · the only third-party review located is a sponsored sample, which described the 1080p footage as good but not as sharp as 2K or 4K cameras and called the IR night display clear. Treat the footage signal as manufacturer-stated, not community-corroborated.
Drivers who want full surround coverage in one kit · front, rear, and both sides · and value the included hardwire kit and supercapacitor for easy, hot-car-safe parking surveillance. Skip it if maximum plate legibility is the priority: a 2K or 4K front camera will read plates more reliably at distance than 1080p, and the R4-RD's footage is not yet backed by independent community testing.
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