This is my first laser level. It takes me a while to get used to, but it's definitely more accurate and less tiring than using the traditional spirit level. If only for something very simple, I will only use this tool in the future.
Pros
Slope/Outside Mode This laser level allows you to create slope lines for your various purposes. Press the OUT button on the top keyboard for 3 seconds, the lines will be locked. You can tilt it at any angle and the alarm will not ring. Touch the OUT button once and the line will switch to open mode and you can use the receiver to expand the working area.