erase older files when the card is full
Is a good quality of memory ?
I bought this from Amazing Tech Depot. It's one of the few times I received something like this in a ziploc bag (with the DVR in a bubble wrap). Construction is cheap, and although the instructions described an A/V cable, there isn't one in the package. I wasn't planning on connecting this directly to a TV, so I didn't follow up on that.What's included is the DVR, the lithium ion battery, the suction cup mount, a piece of instruction leaflet (English, Chinese and Russian), the car power adapter (very long cord - can be routed to keep it out of the way) and a mini USB cable. You need to open one of the flaps on the side to plug in the USB power cable. The other flap on the opposite side covers the SD card slot.The screen is protected by a sheet of plastic. Removing it was a pain, but take your time so that you don't damage the LCD. The LCD is useful for helping aim the camera, and for settings, but unusable in bright sunlight even inside the car. I went through the menu settings. They're pretty much self explanatory, which is good because the instruction leaflet was no help. You need to supply a full sized SD card. I used a 32 GB card without any problem.There is a 1920x1080 setting for video. When I chose that, it recorded in 1280x720 (NOT 1080p), but at slightly above 30 fps. At the 1280x720 setting, it recorded at just slightly above 29.97 fps.Encoding format is motion JPEG. Video quality is mediocre. Don't count on being able to read license plates, but you can definitely tell what you're seeing. IR, as most people pointed out, is useless, and you can leave it off.Using it is simple. Leave it plugged in. When the car turns on, it powers up the unit which starts recording. When you turn the car off, the unit records for another few seconds, then powers off. Files are 2 mins in length, configurable for longer lengths. Default is to erase older files when the card is full.At just a bit over $20, it's a good DVR to play around with. Probably good enough for insurance purposes, though I'm not sure if it can be used as evidence in court. My guess is that it would probably be good enough to prove your innocence (or at least cast reasonable doubt), but not enough to get someone else convicted. At this price, it is cheap enough to try out, and buy a better unit if you decide this is something you'd like to have. 