G840S 12“ Mirror Dash Cam Backup Camera,1296P Full HD Smart Rearview Mirror

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BIG SCREEN & BROAD VIEW - Upgraded from most rearview mirror cameras, WOLFBOX 170° front, and 140° rear lens provide an ultra-wide view, minimizing the blind spots for safe driving/reversing. With the smart screen split function, you can observe a dual-lens display simultaneously. With a 2.5D curved screen, the body is more smooth and more suitable for the curvature of the human retina. Its OEM looking makes the mirror camera perfectly integrate with the existing mirror.
CLEAR IMAGE & NIGHT VISION - With a built-in high-quality chip, the WOLFBOX mirror camera records front and rear with a high resolution of full HD1080P. When the front camera records only it can up to 1296P. The car camera applied an upgraded low-reflectivity LCD to reduce reflection during the day. A 6-layer glass lens enhances night vision in a dark environment. License plates and other small wordings can be displayed clearly.
SMART FUNCTIONS, SAFE DRIVING - ①Streaming Media Rearview; ②Parking Monitoring; ③GPS Function; ④G-Sensor; ⑤Collision boot recording; ⑥Loop Recording; ⑦Video time Lapse; ⑧Adjustable Display View Angle, etc
UPGRADED BACKUP CAMERA - Backup camera shows a rear view of the car by displaying high resolution streaming image in the rear-view mirror. We also add the "Upside down of rear view" and "Rear Cam Mirror Image" menus to adjust the rear image vertically or horizontally. So it can install on pick-up trucks, RVs, or even on the top roof more conveniently.
NEW UPGRADE, TYPE-C POWER SUPPLY - To make the use process more stable, the G840S Mirror Camera has been fully upgraded from Mini-USB to a Type-C socket, which can largely avoid restarting, high-temperature deformation, and so on. (if you need a hardwire kit, please buy a dedicated Type-C hardwire kit. Asin: B09X1L1GMX)

Product Description

rear view mirror camera rear view mirror camera


Warm Tips:

1. The front camera support 1296P / 1080P / 720P, and the rear camera support 1080P / 720P, when the front and rear camera is recording simultaneously, it will be fixed on 1080P.

2. Please check the functionality of the dash cam with its all accessories before installation.

3. The length of the rear camera original cable is 20 feet, suitable for most types of cars. We also have 33 feet(ASIN: B082RZNJFY) and 50feet(Asin: B0814ZHHST) rear camera extension cables sold separately.

4. When using the parking monitoring function, please select the [time-lapse] recording mode. Otherwise, the driving recorder will quickly drain your car battery.

5. Please format micro SD card termly in case of locked videos occupied much capacity, release them necessarily.

6. Please use original accessories provided in the package, just in case of compatible issues after using others'.

7. If you use a micro SD card capacity > 32GB, Please change the micro SD card〔Class10 ( 10MB / sec ) required〕 format to FAT 32 on PC ( a 32GB card is included in the package ).

8. Please confirm whether your cigar power port is ACC. (if the cigarette lighter is still charged after the car is turned off, please use the hardwire kit or unplug the car charger after the car is turned off, otherwise it may exhaust your car's power supply. ) (Note: This happens in some Ford/Audi cars, and electric cars).

9. If your car has it's own reversing assist system, please ignore the reversing line of G840S. The reversing system of the mirror dash cam can only be used as an aid. Unlike the usual reverse assist system that displays a 72-degree view, the mirror recorder can display a 180-degree view, so the rear image will be larger. If you mind, please buy with caution.

10. New upgrade--Type-C power supply, if you need a hardwire kit, please buy dedicated Type-C hardwire kit. Asin: B09X1L1GMX


1. How to find the video recorded by the rear camera?

In the lower-left corner of the video viewing interface, there is a [car-shaped icon]. Click this icon to switch the video interface of the front and rear cameras.

2. When the car is turned on, why can't it turn on automatically? / Why keep shutting down and restarting?

Please use our original car charger cable, otherwise, some problems will occur. If it still occurs, please tell us, and we will solve it for you.

3. Why is GPS not working?

The vehicle must be within a wide range to receive the signal. If it is still not received in a wide area, we will send a new one.

4. Where can I get a GPS player?

Please insert the GPS and SD Card into the dash cam, after restarting the machine, you can see a GPS_Player.txt with the latest GPS Player on the SD card. Note: Please follow the link on the SD Card or consult us directly.

5. Why can't my time be saved?

Please set [Timezone] when using GPS, instead of [Clock Settings].

Note: For more usage questions or accessories needed, please check the manual and FAQ PDF or consult us.

rear view mirror camera rear view mirror camera

Does the mirror dashcam only record front camera video?

G840S saves front and rear videos, if you want to view the previously recorded video, just need to click the playback icon on the home screen to enter the playback interface.

In the lower-left corner of the video viewing interface, there is a [car-shaped icon]. Click this icon to switch the video interface of the front and rear cameras.

rear view mirror camera rear view mirror camera

How to browse rear camera video?

mirror dash cam mirror dash cam

Perfectly Compatible with Pickups, RVs, and Trucks

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Rear Camera not detected?

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Help You Sove More Problem!

  G840S rear view mirror camera dash cam mirror mirror dash cam G880 Mirror Dash Cam G900 dash cam
  119.99 139.99 149.99 259.99 209.99 139.99
Model G840S G840H G850 (2022 New Release) G880 G900(Highest Resolution) D07
Screen 12” 12” 12” 12” 12" 2.45''
Resolution 1080P(F)+1080P(R) 2.5K(F)+1080P(R) 4K(F)+1080P(R) 1080P(F)+1080P(R)+720P(I) 4K(F)+2.5K(R) 4K(F)+1080P(R)
Recommended SD Card 32GB~128GB, Class 10 32GB~128GB, Class 10 32GB~128GB, Class 10 32GB~128GB, Class 10 32GB~128GB, Class 10 32GB~128GB, Class 10
Item Dimension 2.95 x 0.79 x 1.77(in) 11.97*2.8*0.68(in) 11.89*2.8* 0.67(in) 11.4*2.8*0.68(in) 11.89*2.8* 0.67(in) 2.95 x 0.79 x 1.77(in)
Main Body Weight 0.81 lb 0.83 lb 0.83 lb 0.86 lb 0.83 lb 0.22 lb

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