For the price, the Vivitar DVR785HD is a great deal.

Can't believe I got this for.99 cent!! It works perfectly and I love interacting with my Alexa!

The first thing you notice is that this camera is a whole lot smaller than you thought it was going to be. Without the waterproof case it measures a diminutive 2.75 inches wide, and the 2 inch viewing screen covers almost the entire back of the camera.The camera ships without a memory card, so when you buy one I highly recommend at least a Class 10 Micro SD card. Any HD video camera deserves it. A slower card may not record HD video quick enough to prevent problems such as having your recording stop before you're ready or, worst of all, a slow card might result in data corruption and a camera lock-up. This could be the source of some bad reviews that mention the camera freezing up. Also, you ought to respect the Busy light and do not ask the camera to do anything else while it's saving a file. Just to be safe, there is a tiny reset button on the bottom of the camera. Hope you never have to use it, but it's a better choice than waiting for the battery to expire. So far, I've recorded about 90 minutes of video and plenty of still pictures without a glitch.Focus range is 120 cm (5 inches) to infinity, but in a pinch you can go in a whole lot closer, up to a half inch with useful results. The 4x zoom is digital, so it will always reduce detail if you use it. Get closer if you can, but if not, you can always crop the pictures when you get home. As for video, as soon as you zoom in you are no longer using 720 HD. My advice: Unless you have a compelling reason, I'd say to keep the camera set at highest resolution for both stills and video, and skip the zoom. For video you actually have two good choices: 720p HD at 30 frames per second, or in case you need to see sharper motion, there is also VGA at 60 fps. Files are saved in AVI format, and either setting will look and sound very good on YouTube and Facebook.The DVR850HD includes a bike mount with extra spacers, a strap-on helmet mount, a separate tripod mount and, of course, a waterproof enclosure which has its own a tripod mount. Some reviewers have griped about the helmet mount having a strap rather than glue, but I rather like being able to move the camera to a different helmet. Perhaps the most interesting feature is hidden behind the name Vehicle Mounted Mode. No, this is not an anti-shake feature; it's a honest-to-goodness dash-cam! In this mode it will continuously record forever until the battery runs out. Every five minutes the camera automatically saves, so you don't get enormous files. And, if the card fills up, the camera is smart enough to erase the oldest file first. So, for the reviewer who complained that the camera only records 5 minutes at a time: Take it off Vehicle Mounted Mode! I recently shot over 70 minutes of HD dash cam video on a single charge, and when the power got low the camera saved the final file and shut down in an orderly fashion. How big are the HD files? Seventy minutes consumed about 10GB. To save battery power, the camera powers itself off after 5 minutes of standby. If you are in dash cam mode the view screen turns off after a few minutes of recording and a red LED continues to let you know you the camera is still on. Despite the small size, Vivitar even found room to squeeze a teensy playback speaker into the package.My one disappointment is that this camera cannot shoot while on a charger. When it recognizes a plug in the USB port it assumes you are connected to a computer, and your only two choices will be to offload the pictures or start using the Vivitar as a web cam. That's a real disappointment because it would have been ideal to leave this camera plugged in as a dash cam and never worry about recharging it.What are the pictures like? Not bad. The center-weight exposure metering gets the job done and, thanks to a coated lens, the pictures show very good color and contrast. Don't expect vivid colors underwater, though. There are technical reasons why everything turns bluish, and your favorite TV shows spend thousands of dollars to make undersea colors look more natural.The package also includes the "Vivitar Experience Image Manager" on a mini CD. At 18 MB it looked innocent enough, but after it launched a download from the Vivitar site, the final program installation exceeded 120MB. It turns out that the Vivitar experience includes an expanded product manual, (in the language of your choice), plus a picture browser/manager program that finds all the pictures and videos on your PC. It also includes icons for uploading to your favorite social sites, and it lets you can order T-shirts and mugs or create a plain vanilla slide show or custom picture frames.One word of caution: Treat the buttons with respect. You don't want to smash them like one unfortunate reviewer did. Just press slowly until the camera responds, especially if you are operating the camera through the waterproof housing.I am giving this camera a high rating, not because it outperforms much more expensive cameras, but because it is an exceptional value in its price range. Store the camera in its waterproof box for protection and to keep the screen pristine.

Unbelievable all three things you get. They all fit my Hero and my vivitar

Have had my previous ones for.10 years so was afraid to.purchase. these are better than the first

No complaints here.Everything is working like it should.I was using a vivitar 4k action cam with these and it mounts perfectly to all items. Black outside mount along with waterproof mount.Head gear is nice and tight and doesn't move side to side. It can be adjusted to fit needs of just about anyone.Chest peice is adjustable for medium to small builds. Stays in place and doesn't feel uncomfortable.

I bought this camera to mount on my ATV while riding the Alpinr Loop mountain trails of Colorado ($38). My friend paid $300 for her go pro camera for the same trip. The Vivitar included led screen, zoom, mounting bracket and many other features which the go pro did not. After reviewing comparable trail videos from each camera, I was pleasantly surprised at the clarity of the Vivitar. The go pro was a little bit clearer, but not over $200 worth (in my opinion). Also, the Vivitar held its charge for over 2 days riding, the go pro charge would not last a 4 hour ride. The Vivitar is an excellent buy for the price.Mike, Dallas

There isn't a whole lot to say about this filter, it's just perfect for what it is - and an incredible bargain...I needed a protective filter, 77mm diameter and I took a chance on this from Vivitar. - The one thing I can do with any filter is check if it is "flat" and I do that by making "sun spots" - reflecting the sun into some shadow area as far away as I reasonably can, onto some plain, light wall or whatever and I want to see a circular and symmetrical "fuss-ball" with no "funny artifacts" and that's what I got...from both sides of the glass...so it's a "quick'n'dirty" check for flatness...But the best test - and the reason I got this second filter from Vivitar - was some shots taken with the full moon as light source of a scenery that included many bright street lights, with a very wide angle lens...if there were problems - this is where they should have presented themselves, but there were none. Both lens and this filter performed perfectly - no glares or reflection where you really could have expected some...so, there is nothing to complain about.Add to that that the metal ring, holding the glass is very thin, yet solid and well made and you've got "Five Stars"....