G840S | 12″ 1296P Smart Rear View Mirror Camera, with 32GB SD Card

(232 customer reviews)


  • Full HD1080P Resolution front and rear camera
  • 170° front, and 140° rear lens
  • Enhances night vision
  • Real Sony Stavis IMX335 sensor 
  • 12″ IPS full touch screen
  • Seamless Loop Recording & G-sensor emergency videos lock
  • Parking Monitor Mode & Reversing Assistance
  • Wide Dynamic Range(WDR) technology
  • LDWS(Lane Departure Warning)
  • 32 GB SD Card Included
SKU: G840S Categories: ,


If you buy the 'like new', this product is almost brand new.
If you buy the 'good', the appearance of this product is slightly flawed, but it will never affect your normal use!


2021 New Version

We have upgraded the SONY lens with a higher resolution 1296P, used a bigger IPS touch screen to improve the display experience, equipped a 32GB TF Card. Clear quality will help to record all details for your car driving. Whether you need to guard passengers' safety, record certain driving moments, or keep an eye on the car, WOLFBOX is here to help.

Stream Media Rear View Mirror

G840S Stream Media Dash Cam will display the rear image automatically on the full screen when you start the car. The rear image is 1.5 times larger than the ordinary rearview mirror. Cleaner and brighter image can be seen behind the car synchronously with rare blind spot. Dual cameras gives you the better driving experience.

Enhanced Night Vision

Equipped with advanced Analogy High Definition (AHD technology ), the 1080P front and backup camera can automatically balance the light and dark area of the video to give you a better night vision experience.

WDR Technology

Suitable for situations like low light or back light, WDR is able to restore the true colors of objects to the greatest extent. WDR is able to show a fully balanced exposure, with the ability to compensate light and dark spots of the frame in one shot.

Reversing Aid System

When you shift to "r" gear, the rear view will automatically show on the screen with guide lines for easy and safe parking. You can enter the "Reversing line" option in the settings, then adjust the angle of the reversing image and the reversing line. Also when in reversing, you can adjust the viewing angle of the image. (This function activate after the red wire of the rear camera be connected to the positive pole of the reversing light.)

24H Parking Monitor

Turn on the parking mode, the cam will come to start recording once the camera detects shocks or attacks. The car camera supports 24 hours parking monitor and time lapse mode, please use WOLFBOX hardwire kit

G-Sensor & Loop Recording

The rear view mirror dash cam support manual trigger or automatic emergency recording with built-in G-Sensor. When the storage space is full, the front and rear dash cam will automatically overwrite the earliest videos segment with new files. With Loop Recording enabled, you never have to worry about purchasing additional cards when capacity is full.

Lane Departure Warning/LDWS

LDWS will secure your safety by sound alarm when your car is entering into another lane. Press the LDWS button on the Menu Settings to toggle it ON/OFF.

We suggest to turn on this function especially for long-time fatigue driving and novice drivers.

*Warm Tips:

  1. The front camera support 1296P / 1080P / 720P, and 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 dash cam with its all accessories before installation.
  3. Please don’t splice rear camera wire for extension, the monitor may lose the rear image. The length of original cable for rear camera is 20 feet, suitable for most types of cars. We also have 33 feet rear camera extension cables
  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', especially use 2 or 3 in 1 cigar socket will lead to 100% insufficient current supply.
  7. If you use use micro SD card capacity > 32GB, Please change micro SD card〔Class10 ( 10MB / sec ) required〕 format to FAT 32 on PC ( a 32GB card is included in the package ).
  8. If your car does not have a reversing system, you need to connect the Red cable of the rear cam to the positive pole of your reversing lamp. If your car already has a reversing system, you just ignore the red cable on the rear cam.

Additional information

Weight 1.03 oz
Dimensions 34 × 12 × 7 in

New, Used – Like New, Used – Good

232 reviews for G840S | 12″ 1296P Smart Rear View Mirror Camera, with 32GB SD Card

Based on 228 reviews
Showing 11 of 228 reviews (3 star). See all 228 reviews
  1. Jose Altamirano

    Camera does not turn off and assist rear camera with directions lines didnÕt appeared. Disappointed

  2. Kelsie R.

    Just so everyone knows, the camera only records the frontÉthe description says it records front and rear but it doesnÕt. Also it does not work as a regular mirror, maybe during the day because of the reflection..but at night it is pitch black.Update: In the users manual it does not explain how to view the front and rear recordings. It does in fact record both front and rear, you need to go into your settings and then video footage. There are different folders. The bottom has an image of a car and if you tap it it will change view from front to back. The only cons right now is that it does not work as a regular mirror, and that the users manual is lacking on how to use the product.

  3. Michael DiRocco

    ItÕs cool looking yes and everyone is looking into your car because you have something most people donÕt have. But you have to take out a piece of your taillight to access wiring so you can splice the wires together for rear view mirror. Still havenÕt even hooked it up because itÕs annoying to have to install something when you paid this much money. Also clock never works right. And it had LDWS..but a big but no sounds or alarm when you move into another lane. IsnÕt that what LDWS is all about? If you fall asleep at the wheel your not going to see a red line and youÕll probably end up crashing or worse. I bought this for that specific reason and they say they have it they repped about it. Am disappointed in that aspect. Also not enough options through the menu.

  4. Dee Malo

    When I purchased the item I believe it was going to have a navigational option where you input a distination and it will show the direction on the mirror, well unless I am not using it right it doesn’t work.The camera is great however it displays the front at all times. Granted haven’t installed the rear camera sincy truck already has one. I have it on my truck because it looks great but I had to discount the power because of the display.

  5. Allan

     The mirror is very nice, looks great!Pros; front camera quality is amazing, look and design very nice!Cons, had to design my own OEM frame, GPS sensor stopped working after 2 days (as shown in video), rear video quality is not very good at all very snowy look!Overall it it very nice

  6. Allan

    Your browser does not support HTML5 video.

    ÊThe mirror is very nice, looks great!Pros; front camera quality is amazing, look and design very nice!Cons, had to design my own OEM frame, GPS sensor stopped working after 2 days (as shown in video), rear video quality is not very good at all very snowy look!Overall it it very nice

  7. Peter

    Great camera however the mirror is not anti glare. So IÕm the day time itÕs not super clear. To much glare and reflection from window to dash front and rear.You should look for an anti glare mirror. I canÕt return it since I installed it already but I will buy a better mirror to replace this one. The glare is a distraction.

  8. Jamie Hutchinson

    Quality not great. Touch Screen was great

  9. Daniel Gallant

    worked ok.

  10. Timothy Lopez

    Came packed in quality package. Instructions were very vague. Must hook backup camera for proper use. My Jeep has a backup camera, didn’t want have to connect backup camera, but unable to get the best results from product.

  11. hoang Nguyen

    Camera worked great. Quality great. I would gave it five stars if the screen anti reflex coating . Because it does not work well when too bright inside the car.

Add a review

Your email address will not be published. Required fields are marked *

24/7 Customer Service

Free Shipping on order over $50

Secure Checkout

Get 15% off on your order today

coupon code: WOLFBOX15

No thanks! Add item to cart *By completing this, you are signing up to receive our emails. You can unsubscribe at any time.
My cart
Your cart is empty.

Looks like you haven't made a choice yet.