Plastic - Slightly cheaper plastic for the case works well but appears to be cheaper plastic used to assemble the unit. Maybe this type of plastic has a good UV rating, but I would expect the outer shell to feel a bit pliable/rubbery. Although it works fine. Maybe other manufacturers use the same type of plastic. I do not know. The magnet is not strong enough to easily attach to the cart, hits will definitely knock it off. You can use a clip and try to attach it to the card holder. Unfortunately, the clip is held in place by a magnet and while it's safer not to lose it anywhere on the track from this position, a simple hit or hard blow will destroy it, so you'll need to be careful to ensure that that doesn't happen Device quiet is on. Although the clipboard is more likely to simply fall into the shopping cart and not somewhere on the track. Clip - not as convenient as it might seem, it is better to have a clip into which the device fits around the perimeter. unit revolution. Again, the magnet isn't strong enough to hold the jump cart, nor is it when using a clamp, as it's only held together by magnetic electronics - the device picks up local courses fast enough. The device gives pretty good ranges and I have compared it to my laser device and they are very close. The block is really dangerous (abbreviations need to be memorized, some of which are a bit confusing and untranslatable without memorizing them). But the function is good. Software - the block contains all the information, but you have to keep jumping to see what other statuses are. For example, the time is only shown in the start menu, you have to exit the course function, and the time is shown in the main menu. There is no other way to display the time other than setting the time. When you're done, you'll need to go back to find nearby courses, select a course, and then tune back into whatever hole you're on. The unity changes from hole to hole, although sometimes it's in the wrong hole, but that's not too much of a problem, you have to be careful. The device has a battery indicator, but you have to jump around to see how long the battery is lasting, and when the battery is low there's no indicator. The device simply turns itself off. It just looks a little hockeyy and makes it feel cheaply designed and made. Battery Life - I used the unit for 2 full rounds of 18 holes and it lasted about 10 maybe 11 hours before the battery died. The laps were long, 5 hours each, so that's acceptable. Unfortunately, with no battery indicator, it simply turns itself off rather than letting you know when the battery is low. Again, it looks like a normal software feature that shows the remaining battery life or even just the battery life when it's getting low. The battery life is more than enough for two 4 to 4 1/2 laps at home. Most people wouldn't play that much golf in one day. The missing feature is the ability to connect the device to the network and charge it while the device is still working on the golf course, giving you signals over long distances. Most golf carts have USB ports, but as soon as you plug in the device, it charges instantly and all features and functions are unavailable. After unplugging the device, assuming it is charged, you need to move the square, hole, etc. . Useful when in a cup holder so it doesn't get lost and you need some light to see the ranges. In general, the device works as described and will give an accurate hole spacing based on physical location. It's a bit lacking in terms of quality and few people have bothered with the basics (plastic/rubber quality, magnet and clamp functionality, and basic info on how to control a device's battery and the time of day needed to charge it at the to keep going). will not be disconnected from you during the game). I'll look for a clip that allows the device to fit in instead of just being attached with a magnet. But from all the reviews I saw, there was nothing that really described its performance. This is just a fact check.