When I opened the box it almost looked like a toy but it worked as soon as I pushed the ON button and I noticed the motor was about ten times more powerful than the previous three that I tried - and came back. Others were a little larger, much harder to hold - for those old wrists - and sounded like they were on their last legs all the time. mighty tick! All the computers that came with it seemed tiny too, but they worked great. I couldn't believe how long the battery lasted - straight out of the box - when I timed it in my canteen; it never slowed down and the engine sounded perfectly masterful the whole time. THANK YOU for this very nimble, calming and easy addition to my favorite tools! PS It's so easy to carry in the car, and it can also be plugged into the car so it can work all day if needed! (By the way, the ON button stays on, so you don't have to hold it down the whole time - YES!)