Media failed to load. This laser automatically sets the position. That saves a lot of time. Batteries arrived charged and with USB charger. I could use it to measure the walls and make sure my floors were level after transferring the load on my house to the new columns. I also hope to use it to create a second story deck soon. Being able to install it and cut the posts at that height would be a lot better than leveling and using a tape measure. I like a tote bag so I can keep everything together in the garage. The laser was bright and the turning beams were very steep, allowing it to level and level.