The catch
VIOFO A229 Pro 2CH
The bundle chosen here comes without a cabin camera.
Side by side
It comes down to a wired rear view versus a front-only touchscreen with an integrated polarizer.
Before you buy
A229 Pro 2CH and Dash Cam X310 both have an 8.3-million-pixel front frame. Included channel counts are 2 and 1, which makes coverage and the selected modes more worth attention than the equal front label.
Where this comes from
3840 × 2160 = 8294400 pixels, and 3840 × 2160 = 8294400 pixels again. Only output dimensions are compared, not sensor size, shutter speed, compression or readable plate distance.
The catch
The bundle chosen here comes without a cabin camera.
The catch
Despite the premium price, it records the front only.


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Before you pick a dash cam, weigh the A229 Pro 2CH against the Dash Cam X310 on recorded views, card capacity, parking setup and clip review.
It comes down to a wired rear view versus a front-only touchscreen with an integrated polarizer.
Which one fits
A 4K front frame is recorded by both, but VIOFO includes a second 2K camera that faces rearward. If routing a rear cable is your main constraint, Garmin’s single unit is the easier choice, though it can’t supply the missing road direction on its own.
Cards of up to 512GB work in both. Because VIOFO has two streams to retain, the same card size does not give the same retention. Garmin’s touchscreen changes how you handle clips and settings at the windshield.
Because Garmin’s polarizer is integrated, there is no separate front filter to attach. VIOFO includes a removable CPL. Garmin’s remote features carry extra power, connectivity and subscription conditions, whereas VIOFO’s ordinary Wi-Fi is local.
Where X310 records one direction, A229 Pro records two. The extra view is 2560 × 1440 rear footage, and the front pixel count is equal.
In practice
A229 Pro 2CH and Dash Cam X310 both have an 8.3-million-pixel front frame. Included channel counts are 2 and 1, which makes coverage and the selected modes more worth attention than the equal front label.
3840 × 2160 = 8294400 pixels, and 3840 × 2160 = 8294400 pixels again. Only output dimensions are compared, not sensor size, shutter speed, compression or readable plate distance.
A229 Pro 2CH is checked at a 512GB microSD ceiling, against 512GB microSD for Dash Cam X310. Because capacity is equal, bitrate and channel count decide retention.
Capacity is decimal here, with 1TB = 1000GB, and 512 ÷ 512 = 1. It is not a bitrate or runtime measurement.
Where X310 records one direction, A229 Pro records two. The extra view is 2560 × 1440 rear footage, and the front pixel count is equal.
2 minus 1 = one additional recorded direction. Both front frames are 3840 × 2160. What this shows is channel coverage, and it does not claim that all side angles are covered.

VIOFO, A229 Pro 2CH
Both channels record with HDR in this dual-camera system, 4K at the front and 2K at the rear. A front polarizer is included, and storage is local on a microSD card.

Garmin, X310
Garmin keeps its compact, voice-controlled camera format here and adds native 4K plus a responsive 2.4-inch touchscreen on the X310.
Spec by spec
| Spec | VIOFO A229 Pro 2CH | Garmin Dash Cam X310 | In practice |
|---|---|---|---|
| Included views and front recording | 2 views, 3840 × 2160 front | 1 views, 3840 × 2160 front | A 4K front frame is recorded by both, but VIOFO includes a second 2K camera that faces rearward. If routing a rear cable is your main constraint, Garmin’s single unit is the easier choice, though it can’t supply the missing road direction on its own. |
| Rear and cabin arrangement | Rear 2560 × 1440. No included cabin camera | Rear No included camera. No included cabin camera | Enlarging an existing front frame cannot bring back a recording direction that is missing. Check the exact camera bundle included and the usable view once installed. |
| Local recording capacity | 512GB microSD | 512GB microSD | Cards of up to 512GB work in both. Because VIOFO has two streams to retain, the same card size does not give the same retention. Garmin’s touchscreen changes how you handle clips and settings at the windshield. |
| Review controls and network | Button-operated display, 5GHz Wi-Fi | 2.4-inch touchscreen, Garmin Drive app connection | Reviewing clips works differently with a local display. Direct Wi-Fi transfer needs a phone nearby, and it should not be mistaken for cellular remote access. |
| Parking installation | Buffered event with 15-second pre-event capture, time-lapse and low-bitrate modes with HK4 | Parking functions require suitable constant power. Remote functions have separate connectivity and subscription conditions | Because Garmin’s polarizer is integrated, there is no separate front filter to attach. VIOFO includes a removable CPL. Garmin’s remote features carry extra power, connectivity and subscription conditions, whereas VIOFO’s ordinary Wi-Fi is local. |
| Included optical and storage accessories | Included front CPL filter | Integrated Clarity polarizer | Confirm the exact bundle you are buying. Polarizers cut some reflections, and a starter card still has to offer enough capacity and endurance for the selected modes. |
Trade-offs
Change of plan
Go with VIOFO A229 Pro 2CH. A 4K front frame is recorded by both, but VIOFO includes a second 2K camera that faces rearward. If routing a rear cable is your main constraint, Garmin’s single unit is the easier choice, though it can’t supply the missing road direction on its own.
Go with Garmin Dash Cam X310. Because Garmin’s polarizer is integrated, there is no separate front filter to attach. VIOFO includes a removable CPL. Garmin’s remote features carry extra power, connectivity and subscription conditions, whereas VIOFO’s ordinary Wi-Fi is local.
Decision guide
A 4K front frame is recorded by both, but VIOFO includes a second 2K camera that faces rearward. If routing a rear cable is your main constraint, Garmin’s single unit is the easier choice, though it can’t supply the missing road direction on its own.
Cards of up to 512GB work in both. Because VIOFO has two streams to retain, the same card size does not give the same retention. Garmin’s touchscreen changes how you handle clips and settings at the windshield.
Because Garmin’s polarizer is integrated, there is no separate front filter to attach. VIOFO includes a removable CPL. Garmin’s remote features carry extra power, connectivity and subscription conditions, whereas VIOFO’s ordinary Wi-Fi is local.
By the numbers
What we found across the dash cams we compare, plus the checked facts behind each finding.
27 of the 38 models checked meet every need here: “I want footage from the front and the back of the car” and “I want the car covered while it is parked”.
27 models fit, out of 38 checkedHow we countedThe count uses each product's current fit ratings for “I want footage from the front and the back of the car” and “I want the car covered while it is parked”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| VIOFO A229 Pro 2CH |
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| Garmin Dash Cam X310 |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

Rear-road evidence matters to you
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A front-only installation suits you
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