1 / 770mai A900 US Dash Cam
The 70mai A900 US is listed as a front-and-rear dash cam with dual 4K recording, GPS, app control and a 64 GB memory card. Its parking-monitoring feature requires a separately sold hardware kit, so that function involves an additional installation component.
At a glance
- The listing describes front-and-rear recording as true dual 4K, while the technical details separately state 2160p video capture resolution.
- GPS is claimed to log driving speed and routes, with footage preview and download through the 70mai app.
- The listing claims night-vision processing and hands-free voice control.
- G-sensor collision locking and time-lapse parking monitoring are described, but the parking feature requires a separate hardware kit.
Often bought together
Pros and cons
Pros
- The stated 64 GB card provides listed storage with the camera, and the listing says the system supports cards up to 512 GB.
- A rear camera, GPS and app-based footage access are part of the described front-and-rear setup.
- The claimed G-sensor locking can protect collision-triggered footage from being overwritten.
Cons
- Parking monitoring requires a separately sold hardware kit, adding a component and installation step for buyers who want that feature.
Technical specifications
22 specifications| Brand | 70mai |
|---|---|
| Model | A900 US |
| Screen size | 3.18 inches |
|---|---|
| Screen technology listed | LED |
| Video capture resolution | 2160p |
| Frame rate | 30FPS |
| Field of view | 140 degrees |
| Optical sensor technology | CMOS |
| Photo sensor size | 1/2.8 inches |
| Maximum aperture | 1.55 f_stop |
| Wireless connection listed | 5GHz Wi-Fi 6 |
|---|---|
| Control method listed | App |
| Special features listed | Built-In Microphone, Compact Design, Night Vision, Voice Control |
| Compatible devices | Laptop, Personal Computer, Smartphone, Tablet |
| Storage listed | 64 GB |
|---|---|
| Maximum supported memory card size | 512 GB |
| Flash memory type | SD |
| Memory slots available | 1 |
| Vehicle camera positions | Front, Rear |
| Mounting type | Dashboard Mount |
|---|---|
| Dimensions listed | 9.09 x 2.49 x 4.6 cm; 115.1 g |
| Weight listed | 115.1 g |
What to know before buying
Listing details to confirm
The title claims 4K+4K front-and-rear recording, while the details list 2160p resolution without assigning it to each camera. Treat the dual-4K wording as a listing claim and confirm camera-specific recording specifications for your needs. Wi-Fi 5GHz refers to wireless networking, not cellular 5G. The detailed fields list a 64 GB card and 512 GB maximum, while the title also claims support for 512GB Max.
What’s in the box
Included- Power adapter
- Memory card (1)
- Lens wipes (2)
- A900 dash cam (1)
- 64 GB SD card (1)
- Data transfer cable (1)
- Power cord (1)
- Rear camera cable (1)
- User manual ×1
- Electrostatic stickers (4)
- Adhesive stickers (2)
- Adhesive cable clips (5)
- Wiring trim tool (1)
- Rear camera (1)
Who is it for?
A good fit for
- Drivers seeking a front-and-rear dash cam with app access, GPS route logging and a listed memory card.
- Buyers who want parking monitoring and are prepared to obtain the separately sold hardware kit.
Less suited to
- Buyers who need parking monitoring to work without purchasing additional hardware.
- Buyers who require clearly documented, camera-by-camera resolution specifications before choosing a dual-camera system.
Customer reviews on Amazon
- 5 stars
71% 71% - 4 stars
12% 12% - 3 stars
5% 5% - 2 stars
6% 6% - 1 star
6% 6%
Customer feedback reports positive impressions of image quality, overall quality and reliability, while ease of use receives mixed reactions. That feedback is relevant to a camera promoted for app-based preview and downloads, but it does not establish performance for every vehicle or setup. Aggregate ratings are generally favourable but include lower ratings, and do not explain individual experiences.
Positive themes
- Customers report good picture quality and reliability.
Mixed feedback
- Customer feedback describes mixed experiences with ease of use.
Frequently asked questions
Does the 70mai A900 US include a rear camera?
The listing's included-components details name one rear camera, and the product is described as a front-and-rear camera system.
Does parking monitoring work without an extra purchase?
The listing says its 24-hour parking monitoring requires a hardware kit sold separately.
What memory card capacity is stated?
The included-components details list a 64 GB SD card, and another specification states a maximum supported size of 512 GB.
Is the listed 5GHz Wi-Fi cellular 5G?
No. The listing identifies 5GHz Wi-Fi 6, which describes wireless networking rather than cellular service.
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Offer details
- The listing says a hardware kit sold separately is required for parking monitoring.