It does the job.
This was as described and works great, I recommend it but make sure you get the one according how far you want to measure, 40 feet was enough for me.
I didn't want to spend a lot -- it works well for what I needSeems fine.
Have 80m unit. So far, I like it a lot. Just out of the box and verified to be as accurate as they say it is. Nice, compact and easy to use measuring device (therefore, takes a little practice at holding it steady). Also takes a little thinking/practice to learn how to use it for any Pythagorian measuring needs but the instruction booklet is adequate enough to get you there. Red laser dot is somewhat brighter than others have reported so no issues there. Have not yet tested it outside the house/garage in sunlight conditions but seems to work well inside, even in bright light conditions.
Basic functionality is great. Do not however rely on the build in bubble level. It is too small to be accurate.Use a seperate level to make sure you are getting a nice straight line if you need very precise measurements. I used this method to measure the length of cuts needed for crown moulding and it worked great!If you do not have to be precise, butting the end of the unit against the wall or object will suffice. This method is good enough for most applications.