I have been a handyman for 36 years and have knowledge of plumbing, electrical and HVAC. I have used many different laser tools including a 3 point plumb, large area rotator, 360 horizontal and vertical line tools from Bosch, DeWalt and a ground terminal from Port Freight. I want to say that this laser is just way better than any of the devices I have used many times from the top 2 companies that I have named and these devices are 3 times the price. I read a few reviews on this laser before purchasing it and it had some negative aspects so I continued to research its origins/design and read many more reviews to see who I thought most accurate given the language used. . Well I bought it, used it for three and a half full days for digging, site leveling, formwork and subgrade preparation. As said, ease of use, maxed out battery life with at least two of the three beams, I got a full day on a single charge every time. it exceeded all expectations. I checked the accuracy and didn't lose an eighth over 30 feet. If anyone has used a DeWalt or Bosch and is looking for a laser of this quality, you should contact someone who actually does. know the tools and (then give him my number i need advice ha just kidding) buy this laser. I promise you won't be disappointed. I don't write reviews but this product deserves it Dave.