G840S 12" 4K Mirror Dash Cam with 5.8GHz WiFi, 2160P Full HD Smart Rearview Mirror for Cars & Trucks, Front and Rear Dual Cameras, Night Vision, Reverse Assist, Included 32GB Card & GPS

I'm really happy with this so far. This will be an essay because i wanted a lot out of this. I want you to have an easier time than I did in the maddening search for a dash cam with a decent 24hour security monitoring feature.As a dash cam it's pretty much perfect. Picture quality is brilliant. I got it mostly for the time lapse security feature, after extensive research across all of the Wolfbox cameras available from the seller on amazon i picked this one. I chose it because i felt the mirror mounted aspect of it was subtle and it wouldn't attract thieves etc because it didn't appear to be an expensive dash cam. I also didn't want the person i suspect is keying my car to notice there were cameras present.I was looking for a 24 hour parking mode/monitor and this delivers on that, the others all were described as responding to motion. I tried mini cams with this function and found that through a car window infrared motion detection will not trigger. So i suspect that wouldn't have worked for me. Also the others were described as only recording with the front cam in this mode. This camera records time lapse footage 24 hours from when you exit/power down your car. You need to have it hardwired in to the car for this to work, which I did, I had done by a professional which looked like a nightmare to do frankly more because of the robust nature of my car and its panels than anything though.Also it's important to add it will ONLY record for 24 hours and then will cease so as not to deplete to your cars battery. So if like me you wanted this for surveillance then you need to check on your car and turn it on each day. Make sure you remember when you checked it last so as not to miss any potential vandalism etc.It will record a time lapse video which you can set, i used 0.5 seconds myself and will FRONT and BACK record for 24 hours.The dash cam starts recording automatically when you drive. I don't use the reverse parking cam because mine is mounted inside the car and not externally, but with the clarity of both cameras i'm sure it would be really awesome for that. If you had it installed in the bumper like a smart person.I'm really happy with this so far. I got the Wolfbox hardwiring kit, i'd recommend hardwiring it because you can't use the time lapse parking mode without that. I did this because some POS has vandalised my car. One thing i'd say in regards to time lapse/parking mode is that it's not perfect, there are areas out of view on either side of the car and if the weather is bad, rain etc and your mirrors mist up then it's probably not going to be much good at these times.Another positive aspect is that it's really pretty subtle, i think people would have to really know what they were looking for to spot this in your car, especially at night, assuming it's hard wired in nicely without visible wires.There were others available designed for right hand drive cars as we have in the U.K but i got this one as it had the most features and best suited my needs. I'm not finding the camera being on the left side a problem at all to be honest. It's wide angle enough it would catch goings on without being perfectly aligned or close to the drivers perspective or whatever. So if you want this and are thinking it's not the UK version and unsuitable, i'd say don't worry about that.I don't really pay any attention what so ever to the GPS tracker but that seems to work just fine.It's actually pretty easy to navigate the menu and logical, it's been quite fun looking at what happens when i'm not around. It's nice having the wide display and being able to review the footage, be that dash cam or parking monitor footage. I think if something happened and you wanted to see it it might be easier to do on a PC though.I was also worried it wouldn't be good as a regular mirror, it did seem kind of dark to me at first but now i don't think i'd want to go back to my regular rear view mirror. It works well as a standard mirror and the darkness of it reduces glare while allowing you to see everything. If anything it's a better rear view mirror because it's wider than any i've ever seen on a U.K vehicle. So it's a good mirror on its own without even being plugged in etc.

There are two reviews here. G840S & G840H===============================================================Review for G840S:Although initially I though the device is quite bulky, after installation and setup I quickly changed my mind. I had doubts that the device will 'fit' my mirror but once again I was wrong. Just after few seconds of moving it around it fit perfectly and I was stunned how securely it holds.Installation: one important thing to remember is that the camera is on one side of the device as such the device itself will slide more to one of the sides of your mirror. Initially I thought that this will bring the 'picture' too close to my face, but actually it feels very natural and comfortable.Video: I have different 4k camera in another vehicle and after few days of driving and comparing the quality it is hard distinguish the difference. Needless to say, I spent a lot of time doing my research before the purchase, so when this one landed on my lap I was surprised with this shot in the dark.Box: the box comes with a number of gadgets that you can but don't have to use.1) Beside the camera itself and the mounts, you can use the GPS device. This is not compulsory, but if you want the GPS/speedometer info, it’s a must. The add on is very small, consequently you can conveniently install it behind the mirror. From driver's perspective you won't see it at all and it won't impact your vision.2) The other device is the reverse camera that captures picture in the industry standard (for reverse cameras) of 1080p. Initially I thought that the 140 angle on reverse camera (170 front) is insufficient but after driving a few days, I can confirm it's perfect. After reviewing videos I have no problems reading number plates, so in the case of unfortunate accident, you can stay assured, the evidence will be there.3) Cloth, nice bonus for cleaning the camera or device itself4) Plastic wedge to feed and hide the cable during installation5) Few cable holders (there are doing just fine during hot day). Also they can be used multiple times so if you decide to swap the cable (during hardwire installation) this can be done easily. Before installing one or few make sure you are confident if your choice as they hold very well.6) Power adapter7) InstructionsBuild quality: The device feels nice in hand. You get the premium feeling and after opening the box, I almost felt like it's Christmas.Pros: Material, Quality, Ease of installationCons: this one is difficult. NONE in short, but if I was to try and find one thing I don't like, well... not for me but the reverse camera cannot be mounted directly on the window. I know there are people who would prefer do it. Consequently its a matter of preference I guess. Would be nice to have an option to chose which reverse camera option you prefer... but I'm nitpicking now.===============================================================Review for G840H:It pleases me to be given opportunity to once again test another product of this company. A frind of mine was recently involved in a car accident and regrets not having one.Cutting to the chase just like G840S, the G840H provides you with the same quality feeling. The reverse camera feels heavy, but it must be due to its very good build quality. I have seen some plastic reverse cameras which I would not risk putting outside of the car, but this one, without a doubt in my mind can be easily installed over your number plate and configured with the DashCam to be your reverse prinking camera.The box comes with everything you need to do the initial installation. If you need the 24/7 parking mode enabled, a hardwire kit is required. This is standard across the industry. The hardwire kit is not expensive and you can get a good one for areound £25.Picture quality:The camera records in 1440P and can be configured in settings to use either H.264 or H.265 compression. On the paper, 265 is better as offers better compression and more footage on the same memory card. In my private opinion I prefer the old H.264. I found it provides marginally better quality picture and the loss in form of bigger video files is the price I'm prepared to pay. Let's be honest, the 256GB cards are not that expensive these days.Reverse camera records at 1080P which is industry standard.Front and back camera angle coverage:Front record at 170 and captures nicely everything you need, even vehicles that are practically parked next to you. Back camera provides 140 degrees angle and this is everything you will ever need. There is currently nothing with wider angle or better quality from what I can see, but you are welcome to do your research.Memory card:The box comes with 32GB memory card. This is perfect to get the DashCam up and running straight away, nevertheless I do recommend upgrading to at least 128GB, or 256GB if you plan on using parking more.Installation:This cannot be any simpler. If you don't count the time to plug it into the power source, I doubt it will take you more than 30 seconds to get in installed. It's hard to describe it, but my advise it to simply put it over the mirror and wiggle around until you feel it sits comfortably, and then secure with straps.Settings:The camera has a huge screen and it is super easy to configure from software perspective. I do prefer this over cameras that need to be connected to over iOS/Android system. It is super responsive and provides immediate feedback.Box:Comes with everything you will need to get the device up and running. I have attached picture with items available in the G840H box.Pros:Just like G840H, the product is of premium quality. Also, if you like to see clearly what is behind you and could use a bit of zoom, think no more. The dash cam screen is big enough to provide you just that, and not big to make you feel like it covers the windscreen. Further to the above the cam comes with GPS so it can also record your speed and location. This is a huge advantage in case you have an unfortunate encounter and someone refuses to accept liability.Cons:This is more of preference. Although the 1440P video is perfectly sufficient to read the numberplates and to be used as evidence, I do prefer the 4k quality cams. If this is also your preference G840S from the same seller ticks all the boxes.