I like many things about the VEVOR Massage Gun. First of all, it is very powerful, mores than many other massage guns on the market. It also has many different heads that can be attached and nine different levels/functions. I have a more expensive name brand unit that has fewer heads and levels. In addition, the battery charges quickly enough and lasts a long time between charges. Finally, the unit is comfortable to hold in your hand. With all that, this could be the perfect massage gun.However, there is one major flaw with this unit. The design with just one straight handle makes it hard to use on your back or hard to reach areas; I have to have someone else hold it for my back The VEVOR Massage Gun could be the perfect massage gun if the design were changed to make it easier to use on your back. I give the unit four stars because it works so well in every other respect, and some users may not want it for their backs. However, if your back is what you need this for, you might want to consider another unit unless you have a consistent helper.