The catch
VIOFO A229 Plus 2CH
In the selected package, storage has to be bought on top.
Side by side
The A229 Plus 2CH is the better pick when 1440p recording from both the front and rear cameras matters most. The R2-4K Dual makes sense for its included 128GB card, larger display and supplied suction mount. ROVE says outright that its front video is native 2.5K upscaled to 4K, so don’t read the product name as native 4K capture.
Before you buy
Compared with a 1080p frame, VIOFO's rear frame holds about 78% more pixels. That raises the recorded pixel count behind the vehicle, yet exposure, focus, glass and motion still decide whether an important detail is usable.
Where this comes from
2560 × 1440 = 3,686,400 pixels, and 1920 × 1080 = 2,073,600. Then 3,686,400 / 2,073,600 - 1 = 77.8%.
The catch
In the selected package, storage has to be bought on top.
The catch
The rear tops out at 1080p.


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Rear-camera detail, native capture, included storage and a realistic parked-car setup are the points of comparison between the VIOFO A229 Plus 2CH and the ROVE R2-4K Dual.
The A229 Plus 2CH is the better pick when 1440p recording from both the front and rear cameras matters most. The R2-4K Dual makes sense for its included 128GB card, larger display and supplied suction mount. ROVE says outright that its front video is native 2.5K upscaled to 4K, so don’t read the product name as native 4K capture.
Which one fits
Where this ROVE Dual records 1080p, A229 Plus records 2560 × 1440 at the rear.
ROVE labels its 4K output as upscaled from native 2.5K, and A229 Plus is 1440p.
Storage of 128GB is included in this ROVE listing. Add a suitable card to the VIOFO order.
The ROVE package lists both suction and adhesive mounts.
That recording cannot be maintained by either without a suitable continuous power arrangement.
In practice
Compared with a 1080p frame, VIOFO's rear frame holds about 78% more pixels. That raises the recorded pixel count behind the vehicle, yet exposure, focus, glass and motion still decide whether an important detail is usable.
2560 × 1440 = 3,686,400 pixels, and 1920 × 1080 = 2,073,600. Then 3,686,400 / 2,073,600 - 1 = 77.8%.
According to the manufacturer, the original Dual's front capture is native 2.5K with 4K upscaling. A buyer who requires native 3840 × 2160 capture should pick a different model, and should not read this naming difference as a VIOFO weakness.
On ROVE's current product page, native 2.5K capture is explicitly kept apart from 4K output. A229 Plus lists 2560 × 1440 capture. Neither statement covers native 3840 × 2160 capture.
The exact ROVE package selected comes with 128GB storage, while VIOFO's card is optional. Compare a working two-camera installation with appropriate storage and parking power added in, not just the camera prices.
A 128GB microSD card appears in the ROVE package list, whereas VIOFO lists microSD as an optional accessory. Each needs storage to keep driving footage.

VIOFO, A229 Plus 2CH
Front and rear both record at 2560 × 1440 in this two-camera system, which has dual STARVIS 2 sensors and HDR. It fits drivers who want coverage of the road behind them but no cabin camera.

ROVE, R2-4K DUAL
This value bundle packs a lot in: front and rear cameras, a 128GB card, two ways to mount it, GPS and fast app transfers over 5.8 GHz.
Spec by spec
| Spec | VIOFO A229 Plus 2CH | ROVE R2-4K Dual | In practice |
|---|---|---|---|
| Front recording | 2560 × 1440 | Native 2.5K, upscaled to 4K output | Native 4K sensor capture is not established by ROVE's 4K file dimensions. |
| Rear recording | 2560 × 1440 HDR | 1920 × 1080 | More rear-frame pixels come from VIOFO, though plate readability is not guaranteed. |
| Display | 2.4-inch LCD | 3-inch IPS display | ROVE has the larger preview on the device. |
| Memory card in selected package | Card purchased separately | 128GB card included | Count storage as part of the full startup cost. |
| Mounting options | Adhesive GPS mount | Suction and adhesive mounts included | For a front-camera installation that needs to be removable, the suction option can help. |
| Parking power | Compatible hardwire kit or suitable continuous supply required | Optional compatible hardwire kit required for the documented parking setup | Running all night on a supercapacitor alone is beyond either. |
Trade-offs
Change of plan
Go with VIOFO A229 Plus 2CH. The rear camera on it records at 2560 × 1440.
Go with ROVE R2-4K Dual. Those accessories come with the selected ROVE package.
Neither model fits. The original ROVE Dual discloses upscaled 4K output, and the VIOFO is 1440p.
Decision guide
A big gap in rear resolution can get lost behind the label on the front camera. VIOFO records 1440p at both ends, while this ROVE package records 1080p behind the vehicle. That spec matters when rear footage counts, though pixel count alone does not guarantee readable number plates.
The R2-4K Dual and the R2-4K Dual Pro are different products. ROVE’s page now carries an explicit upscaling disclosure for the original Dual selected here. This comparison goes by that disclosure and the verified Amazon identity. Don’t borrow specifications from the newer Pro just because the names look alike.
A cable has to be routed through the vehicle for both rear cameras. ROVE includes a card and a suction-mount option, which can make the first order simpler. Parking recording is still a separate power decision. Before assuming that either supplied driving cable gives overnight coverage, check fuse compatibility, low-voltage protection and safe cable routing.
By the numbers
What we found across the dash cams we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| VIOFO A229 Plus 2CH |
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| ROVE R2-4K Dual |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

Capture the rear view at 2560 × 1440 rather than 1080p
See price & reviews on Amazon
Begin with the 128GB card included in the selected package
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