I have wanted a bicycle mirror for years, and had reviewed dozens of different ones but I just couldn't make up my mind. I finally decided upon the Meachow 2022 New Bar End Bike Mirror and I am very pleased with it!

SET UP: All bike handles are different, but this was very easy to install on mine; took less than 5 minutes. I chose to place it on the left handlebar. It is important to note that this device is compatible with Mountain, Folding and Hybrid bike types. It is NOT compatible with Road and Beach Cruiser bikes. Be sure to review the size chart to ensure it will fit your handlebars.

SIZE: 1) Stem: The stem screws into the handlebar, and unlike a lot of other devices, this stem does NOT extend like a long tree branch off from the handlebar. This is an important feature to me because if I am biking on a narrow path with close bushes/tree branches, a long stem could get caught and break off. This device is compact and minimalist. 2) Mirror: The size and shape of the mirror provides the ideal size of viewing space, and I really like the oblong shape of the mirror versus a round shape. The dimensions of the mirror: 5.3"w x 2.5"h.

MANUVERABILITY: This is the key feature of this device! 1) When installing the stem on the handlebar, the stem can be adjusted backward and forward to your desired location. 2) Once the stem is installed on the handlebar, the mirror can then be adjusted to a vertical or horizontal position. And, there is a ball mechanism behind the mirror attached to the stem, which allows for the mirror to be rotated too different angles (up, down, left, right). 3) After finished biking, the mirror easily folds inward, toward the inside of the handlebar so that it doesn't stick out while traveling on the bike rack.

It is important to note that tightness or looseness of the screw that attaches the stem to the mirror is what allows the mirror to be rotated to the different angles. This means that if it is too loose, the mirror may not stay in place if you go over a bump. Conversely, if it is too tight, then you may not be able to adjust it to your preferred placement. It might take a bit of experimentation to find the ideal screw tightness for your needs.

BOTTOM LINE: If you want a minimalist mirror that provides full maneuverability combined with the capability of folding inward for travel on a bike rack, then this one is a winner!

Purchased the blue tinted mirror first and IMO it's my first choice for bright days. Added a second to my wife's ebike (untinted), and I would prefer that one for darker, cloudier conditions. These have a nice wide view, and the glass is clear and undistorted. They mount securely in the bar end, and hold their position relatively well. I have had to reset the position on some occasions when riding rough terrain, and periodically tighten the screw that holds it's setting. No big deal, as I carry a basic tool set at all times. I like these mirrors so much, we've added a third on my son's ebike.

I really liked the mounting system. It was easy to remove the plug on my left handle bar and install the mirror mount. The mirror was easy to adjust and provided me with a good view of what was behind me.
Unfortunately, my parked HeyBike Mars fell over while parked and the first point of ground contact was the mirror mount. It snapped off and there was no way to repair it. I bought another one soon after and have taken steps to avoid having my Mars fall over again by attaching a golf ball to the end of the kickstand.

Without any trouble installed the mirror on my E-bike, and took it for a long ride. I was pleasantly surprised at how well it worked. I had a clear and distant view of the lanes both coming and going to my rear, and easily saw cars approaching me . I felt a measure of extra safety with the mirror.

The mirror looks and feels nice, but the mirror part detached from the mount (I think the metal bolt fell out) thirty miles into my first ride with it. I was on a relatively smooth, paved cycling trail, so it shouldn't have fallen apart. I think it's likely that the mirror that was shipped to me was defective.
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Edit: the manufacturer contacted me very quickly and issued a refund for the defective mirror. I have ordered a new mirror and will update my review after trying it.

I have not taken it on a ride yet, but the new mirror seems to hold together much better than the defective one I received.