70mai A810
By 70mai · Dash Cams · Audio & Electronics · More from 70mai
- 3840x2160P 4K UHD front camera
- Sony STARVIS 2 IMX678 sensor
- 3.0-inch IPS display 640x360P
- 150-degree field of view F1.8 aperture
- 60FPS/30FPS/25FPS frame rate
Price not listed
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Summary
A front-and-rear 4K dash cam built around the Sony STARVIS 2 IMX678 sensor, aimed at a driver who wants strong front footage for not much money. Check the frame rate before you buy: in 4K dual-channel mode the front camera records at 25 FPS, not 60, and the rear camera is only 1080p.
Strengths
- The front camera is the reason to buy: a Sony STARVIS 2 IMX678 sensor recording 4K at about 31 Mbps.
- PCWorld gave it Editors’ Choice and called it a bargain among dual-channel 4K cameras.
- Front day-video detail is strong, and a forum owner found plate capture surprisingly clear at 80 kph.
- The 150° lens and quick exposure adjustment handle changing light well.
- Installation is easy and discreet, with an adhesive mount and a compact body.
- Built-in GPS, Wi-Fi/Bluetooth app control and optional 4G cover the usual dash-cam jobs.
Weaknesses
- The rear camera is only 1080p and the most consistent complaint; PCWorld called it livable but not optimally processed.
- In 4K dual-channel mode the front drops to 25 FPS, which one owner found too jittery to keep using.
- It uses a 500mAh battery, not a capacitor, which is a heat-and-longevity concern in hot climates.
- Parking mode is non-buffered and needs the separate UP03 hardwire kit.
- Wi-Fi transfer is slow and owners report microSD formatting issues.
- DashCamTalk scored reliability 6/10 and support 6/10.
Verified specifications
| Model | 70mai A810 (sold as “70mai Dash Cam 4K A810”). |
|---|---|
| Front sensor | Sony STARVIS 2 IMX678, 1/1.8 inch. |
| Front resolution | 3840x2160P (4K UHD). |
| Front frame rate | up to 60 FPS at lower resolution; 25 FPS in 4K dual-channel mode. |
| Front lens | F1.8, 150° field of view. |
| Rear camera | SmartSens SC200AI, 1920x1080p, 130° field of view, HDR. |
| Display | 3.0 inch IPS, 640x360P, not a touchscreen — four buttons for navigation. |
| Processor | Novatek NT98529. |
| Battery | 500mAh (a battery, not a capacitor). |
| GPS | built-in. |
| Connectivity | Wi-Fi and Bluetooth, with the 70mai app; optional 4G via the UP04 hardwire kit, sold separately. |
| Parking mode | non-buffered, with AI motion detection and time-lapse; requires the UP03 hardwire kit, sold separately. |
| ADAS | pedestrian/biker, lane departure, front collision and moving traffic alerts. |
| Storage | microSD 32GB to 256GB, card not included. |
| Video | MP4, H.265 (H.264 also available). |
| Bitrate | about 31 Mbps front, about 8 Mbps rear. |
| Storage use | 4K front about 225MB per minute, 1080p rear about 60MB per minute; about 15 hours on 256GB. |
| Dimensions | 36.3 x 59.8 x 88 mm. |
| Power | 5V. |
| Warranty | 12 months. |
Full research notes and sources
Front video versus rear video
The A810’s case rests on the front camera. TechRadar called the front 4K footage excellent in all lighting, and a forum owner found front plate capture surprisingly clear at 80 kph.
The rear is the weak half. It runs at only about 8 Mbps, and in one owner’s test it captured no readable plates at all. A low-light owner also found parked-car plate capture impossible at the curb, with HDR doing little in those conditions.
The battery question
The A810 uses a 500mAh battery rather than a supercapacitor, and that is the main long-term worry for a device glued to a windshield in the sun. Batteries degrade and can swell in heat, and both DashCamTalk and forum owners flag it; the top forum thread is about whether to remove the camera in hot weather. 70mai moved the later A810S to a supercapacitor, which suggests the design was worth changing.
Parking mode, app and upkeep
Parking mode is not buffered, so it does not keep the seconds before an event; it runs AI motion detection and time-lapse recording but needs the separate UP03 hardwire kit. 4G is optional and needs the UP04 kit, and only in select countries. The 3.0 inch screen is a status display at 640x360P, not a playback monitor, and there is no touchscreen, so setup runs through four buttons or the app. Owners report slow Wi-Fi transfer and microSD formatting trouble; no card is included, so budget for one from 32GB to 256GB. An optional RC14 Starvis 2 rear camera upgrades the rear footage over the included unit.
Is it worth it?
Around $150-180 the A810 is a fair buy if front 4K day-video is your priority and you accept an average rear camera, a battery instead of a capacitor, 25 FPS in 4K dual-channel mode and non-buffered parking. PCWorld reviewed it at $179 and gave it Editors’ Choice, and DashCamTalk lists $160. Digital Camera World put the front-and-rear kit at an RRP of $199.99 and the front-only unit at $159.99 in May 2024. Above roughly $190-200 the trade-offs get hard to justify. Buyers in hot climates should weigh the battery design first.
Which model this is
This page covers the 70mai Dash Cam 4K A810, released in August 2023 — the front-and-rear dual-channel camera with the Sony IMX678 sensor. Do not confuse it with the A810 Lite, A810S, A800SE or A800S, which are different products; the A810S is the later version that switched from a battery to a supercapacitor. The 4K in the marketing name is just a prefix, and support pages and DashCamTalk list it simply as the A810.
The Amazon listing for this model is ASIN B0D83RK7X3.
Sources
Manufacturer:
Independent reviews:
Owner reports: